I wrote a little program up to 1000, here it is up to 111. The first number that achieves a given class number tends to be squarefree, an exception being h=104. EDIT: I've run this up to 4000 so far. To get a class number $h,$ there was always some $k$ with $k < 4 h^2.$ The largest $h$ where $h^2$ did not suffice was $h=677,$ with smallest $k = 601247.$ For $678 \leq h \leq 4000,$ there was always some $k \leq 0.751517... h^2,$ equality at $h=857, k=551951.$
I wrote a little program up to 1000, here it is up to 111. The first number that achieves a given class number tends to be squarefree, an exception being h=104.
I wrote a little program up to 1000, here it is up to 111. The first number that achieves a given class number tends to be squarefree, an exception being h=104. EDIT: I've run this up to 4000 so far. To get a class number $h,$ there was always some $k$ with $k < 4 h^2.$ The largest $h$ where $h^2$ did not suffice was $h=677,$ with smallest $k = 601247.$ For $678 \leq h \leq 4000,$ there was always some $k \leq 0.751517... h^2,$ equality at $h=857, k=551951.$
I don't know about surjectivity of class numbers. I imagine so.
For a list of the first time each small class number occurs, see [OEIS060649][1], class numbers up to 50 See OEIS
I wrote a little program up to 1000, here it is up to 111. The first number that achieves a given class number tends to be squarefree, an exception being h=104.
1 3 = 3
2 15 = 3 * 5
3 23 = 23
4 39 = 3 * 13
5 47 = 47
6 87 = 3 * 29
7 71 = 71
8 95 = 5 * 19
9 199 = 199
10 119 = 7 * 17
11 167 = 167
12 231 = 3 * 7 * 11
13 191 = 191
14 215 = 5 * 43
15 239 = 239
16 399 = 3 * 7 * 19
17 383 = 383
18 335 = 5 * 67
19 311 = 311
20 455 = 5 * 7 * 13
21 431 = 431
22 591 = 3 * 197
23 647 = 647
24 695 = 5 * 139
25 479 = 479
26 551 = 19 * 29
27 983 = 983
28 831 = 3 * 277
29 887 = 887
30 671 = 11 * 61
31 719 = 719
32 791 = 7 * 113
33 839 = 839
34 1079 = 13 * 83
35 1031 = 1031
36 959 = 7 * 137
37 1487 = 1487
38 1199 = 11 * 109
39 1439 = 1439
40 1271 = 31 * 41
41 1151 = 1151
42 1959 = 3 * 653
43 1847 = 1847
44 1391 = 13 * 107
45 1319 = 1319
46 2615 = 5 * 523
47 3023 = 3023
48 1751 = 17 * 103
49 1511 = 1511
50 1799 = 7 * 257
51 1559 = 1559
52 1679 = 23 * 73
53 2711 = 2711
54 2759 = 31 * 89
55 4463 = 4463
56 1991 = 11 * 181
57 2591 = 2591
58 2231 = 23 * 97
59 2399 = 2399
60 2159 = 17 * 127
61 3863 = 3863
62 2471 = 7 * 353
63 2351 = 2351
64 2519 = 11 * 229
65 3527 = 3527
66 3431 = 47 * 73
67 3719 = 3719
68 2831 = 19 * 149
69 3119 = 3119
70 3239 = 41 * 79
71 5471 = 5471
72 3311 = 7 * 11 * 43
73 2999 = 2999
74 4151 = 7 * 593
75 4703 = 4703
76 3071 = 37 * 83
77 6263 = 6263
78 5111 = 19 * 269
79 4391 = 4391
80 5183 = 71 * 73
81 3671 = 3671
82 3839 = 11 * 349
83 3911 = 3911
84 4031 = 29 * 139
85 4079 = 4079
86 6767 = 67 * 101
87 5279 = 5279
88 4199 = 13 * 17 * 19
89 6311 = 6311
90 5951 = 11 * 541
91 4679 = 4679
92 4991 = 7 * 23 * 31
93 5351 = 5351
94 7367 = 53 * 139
95 6959 = 6959
96 6071 = 13 * 467
97 5519 = 5519
98 6191 = 41 * 151
99 5591 = 5591
100 7991 = 61 * 131
101 5879 = 5879
102 9383 = 11 * 853
103 13799 = 13799
104 9359 = 7^2 * 191
105 6719 = 6719
106 7631 = 13 * 587
107 8231 = 8231
108 5759 = 13 * 443
109 5711 = 5711
110 7751 = 23 * 337
111 15359 = 15359
112 7895 = 5 * 1579
113 8039 = 8039
114 6431 = 59 * 109
115 7559 = 7559
116 7271 = 11 * 661
117 6551 = 6551
118 8351 = 7 * 1193
119 9791 = 9791
120 7391 = 19 * 389
121 8111 = 8111
122 11735 = 5 * 2347
123 14087 = 14087
124 9119 = 11 * 829
125 11519 = 11519
126 8279 = 17 * 487
127 19463 = 19463
128 10295 = 5 * 29 * 71
129 9551 = 9551
130 8879 = 13 * 683
131 12671 = 12671
132 8711 = 31 * 281
133 9719 = 9719
134 8399 = 37 * 227
135 8951 = 8951
136 9911 = 11 * 17 * 53
137 15287 = 15287
138 9071 = 47 * 193
139 9239 = 9239
140 13319 = 19 * 701
141 11399 = 11399
142 15311 = 61 * 251
143 11471 = 11471
144 11591 = 67 * 173
145 14879 = 14879
146 13199 = 67 * 197
147 13679 = 13679
148 11231 = 11 * 1021
149 17783 = 17783
150 11879 = 7 * 1697
151 22727 = 22727
152 14111 = 103 * 137
153 10391 = 10391
154 12311 = 13 * 947
155 20807 = 20807
156 10919 = 61 * 179
157 25847 = 25847
158 15935 = 5 * 3187
159 12479 = 12479
160 15431 = 13 * 1187
161 12239 = 12239
162 13919 = 31 * 449
163 40039 = 40039
164 14231 = 7 * 19 * 107
165 12911 = 12911
166 26279 = 11 * 2389
167 15671 = 15671
168 18599 = 7 * 2657
169 24551 = 24551
170 23183 = 97 * 239
171 13751 = 13751
172 17135 = 5 * 23 * 149
173 14159 = 14159
174 13439 = 89 * 151
175 18719 = 18719
176 18431 = 7 * 2633
177 22871 = 22871
178 13991 = 17 * 823
179 17519 = 17519
180 15839 = 47 * 337
181 14759 = 14759
182 14999 = 53 * 283
183 16631 = 16631
184 21791 = 7 * 11 * 283
185 14951 = 14951
186 20591 = 59 * 349
187 25583 = 25583
188 20951 = 7 * 41 * 73
189 22511 = 22511
190 16799 = 107 * 157
191 22271 = 22271
192 16511 = 11 * 19 * 79
193 26591 = 26591
194 20279 = 7 * 2897
195 15791 = 15791
196 19151 = 11 * 1741
197 24071 = 24071
198 17951 = 29 * 619
199 19991 = 19991
200 21311 = 101 * 211
201 32423 = 32423
202 17111 = 71 * 241
203 19031 = 19031
204 20039 = 29 * 691
205 18119 = 18119
206 20471 = 11 * 1861
207 34583 = 34583
208 19631 = 67 * 293
209 28151 = 28151
210 28079 = 43 * 653
211 39791 = 39791
212 20159 = 19 * 1061
213 18191 = 18191
214 21551 = 23 * 937
215 24359 = 24359
216 22799 = 7 * 3257
217 22679 = 22679
218 24839 = 59 * 421
219 24671 = 24671
220 26039 = 13 * 2003
221 26711 = 26711
222 22151 = 17 * 1303
223 44111 = 44111
224 25751 = 11 * 2341
225 25031 = 25031
226 25511 = 97 * 263
227 24239 = 24239
228 21479 = 47 * 457
229 23399 = 23399
230 25079 = 31 * 809
231 26759 = 26759
232 26351 = 13 * 2027
233 28871 = 28871
234 23231 = 13 * 1787
235 37991 = 37991
236 27599 = 11 * 13 * 193
237 33071 = 33071
238 28271 = 17 * 1663
239 25679 = 25679
240 26519 = 23 * 1153
241 37511 = 37511
242 23999 = 103 * 233
243 29399 = 29399
244 28391 = 11 * 29 * 89
245 26879 = 26879
246 34991 = 11 * 3181
247 27191 = 27191
248 25871 = 41 * 631
249 27551 = 27551
250 30551 = 137 * 223
251 39119 = 39119
252 27719 = 53 * 523
253 35831 = 35831
254 42335 = 5 * 8467
255 40559 = 40559
256 39431 = 7 * 43 * 131
257 31799 = 31799
258 30791 = 41 * 751
259 27431 = 27431
260 32759 = 17 * 41 * 47
261 38711 = 38711
262 37751 = 7 * 5393
263 36671 = 36671
264 29279 = 19 * 23 * 67
265 48023 = 48023
266 30239 = 11 * 2749
267 44711 = 44711
268 38111 = 23 * 1657
269 34919 = 34919
270 31919 = 59 * 541
271 83903 = 83903
272 30719 = 13 * 17 * 139
273 41999 = 41999
274 32639 = 127 * 257
275 38351 = 38351
276 36839 = 11 * 17 * 197
277 55871 = 55871
278 33431 = 101 * 331
279 33479 = 33479
280 38279 = 101 * 379
281 41039 = 41039
282 32471 = 19 * 1709
283 48311 = 48311
284 38471 = 17 * 31 * 73
285 35591 = 35591
286 42671 = 71 * 601
287 47591 = 47591
288 36431 = 17 * 2143
289 31391 = 31391
290 40799 = 11 * 3709
291 36599 = 36599
292 34151 = 13 * 37 * 71
293 43151 = 43151
294 49079 = 17 * 2887
295 51239 = 51239
296 46079 = 11 * 59 * 71
297 42839 = 42839
298 38951 = 11 * 3541
299 59879 = 59879
300 34271 = 43 * 797
301 43319 = 43319
302 61079 = 103 * 593
303 53279 = 53279
304 39311 = 19 * 2069
305 35279 = 35279
306 50879 = 83 * 613
307 56711 = 56711
308 40871 = 23 * 1777
309 43991 = 43991
310 41159 = 79 * 521
311 40031 = 40031
312 43559 = 43 * 1013
313 58679 = 58679
314 68631 = 3 * 22877
315 44351 = 44351
316 48671 = 7 * 17 * 409
317 42719 = 42719
318 45839 = 23 * 1993
319 62639 = 62639
320 42479 = 107 * 397
321 80687 = 80687
322 51959 = 223 * 233
323 49391 = 49391
324 39959 = 31 * 1289
325 38639 = 38639
326 56831 = 17 * 3343
327 46511 = 46511
328 63071 = 59 * 1069
329 43391 = 43391
330 58319 = 29 * 2011
331 44519 = 44519
332 51119 = 17 * 31 * 97
333 75431 = 75431
334 49271 = 29 * 1699
335 56591 = 56591
336 47879 = 13 * 29 * 127
337 46199 = 46199
338 78359 = 127 * 617
339 52919 = 52919
340 51911 = 23 * 37 * 61
341 67271 = 67271
342 54071 = 139 * 389
343 52631 = 52631
344 47519 = 19 * 41 * 61
345 58511 = 58511
346 56111 = 11 * 5101
347 75767 = 75767
348 52751 = 17 * 29 * 107
349 79967 = 79967
350 47759 = 163 * 293
351 66071 = 66071
352 45239 = 19 * 2381
353 61031 = 61031
354 48551 = 47 * 1033
355 53759 = 53759
356 64391 = 19 * 3389
357 49871 = 49871
358 62879 = 227 * 277
359 50111 = 50111
360 58799 = 13 * 4523
361 50951 = 50951
362 54599 = 71 * 769
363 64319 = 64319
364 60791 = 31 * 37 * 53
365 64151 = 64151
366 64559 = 11 * 5869
367 56999 = 56999
368 65639 = 7 * 9377
369 89231 = 89231
370 71759 = 73 * 983
371 82031 = 82031
372 67199 = 11 * 41 * 149
373 57791 = 57791
374 54911 = 43 * 1277
375 53231 = 53231
376 55319 = 11 * 47 * 107
377 73751 = 73751
378 62999 = 73 * 863
379 59351 = 59351
380 62711 = 11 * 5701
381 57119 = 57119
382 61199 = 19 * 3221
383 105167 = 105167
384 56759 = 211 * 269
385 78311 = 78311
386 69359 = 43 * 1613
387 58439 = 58439
388 73295 = 5 * 107 * 137
389 91079 = 91079
390 69551 = 157 * 443
391 78839 = 78839
392 77159 = 19 * 31 * 131
393 74231 = 74231
394 73799 = 11 * 6709
395 61151 = 61151
396 74711 = 7 * 13 * 821
397 84431 = 84431
398 60359 = 13 * 4643
399 61871 = 61871
400 67031 = 17 * 3943
401 73079 = 73079
402 72791 = 83 * 877
403 71399 = 71399
404 83279 = 7 * 11897
405 64679 = 64679
406 73391 = 79 * 929
407 70199 = 70199
408 71279 = 13 * 5483
409 67679 = 67679
410 85271 = 71 * 1201
411 87671 = 87671
412 73559 = 17 * 4327
413 100559 = 100559
414 73031 = 7 * 10433
415 81119 = 81119
416 71111 = 17 * 47 * 89
417 88799 = 88799
418 90119 = 227 * 397
419 151247 = 151247
420 74399 = 13 * 59 * 97
421 72959 = 72959
422 70391 = 43 * 1637
423 63839 = 63839
424 65159 = 23 * 2833
425 84719 = 84719
426 86831 = 31 * 2801
427 79631 = 79631
428 93959 = 17 * 5527
429 75479 = 75479
430 108479 = 7 * 15497
431 102359 = 102359
432 72071 = 97 * 743
433 96431 = 96431
434 68591 = 113 * 607
435 93911 = 93911
436 73631 = 29 * 2539
437 124823 = 124823
438 76439 = 11 * 6949
439 109391 = 109391
440 71231 = 19 * 23 * 163
441 92951 = 92951
442 92231 = 149 * 619
443 87911 = 87911
444 104279 = 7 * 14897
445 82799 = 82799
446 82199 = 13 * 6323
447 124991 = 124991
448 78119 = 191 * 409
449 128351 = 128351
450 75599 = 17 * 4447
451 141311 = 141311
452 83879 = 37 * 2267
453 83639 = 83639
454 75071 = 41 * 1831
455 80471 = 80471
456 97991 = 29 * 31 * 109
457 90359 = 90359
458 98831 = 23 * 4297
459 92399 = 92399
460 82631 = 19 * 4349
461 138959 = 138959
462 81311 = 17 * 4783
463 90191 = 90191
464 85679 = 11 * 7789
465 117959 = 117959
466 82991 = 37 * 2243
467 125639 = 125639
468 79439 = 19 * 37 * 113
469 87071 = 87071
470 85151 = 11 * 7741
471 107999 = 107999
472 106679 = 107 * 997
473 135599 = 135599
474 85511 = 233 * 367
475 99839 = 99839
476 88871 = 181 * 491
477 110711 = 110711
478 109031 = 13 * 8387
479 115319 = 115319
480 84839 = 43 * 1973
481 153071 = 153071
482 103871 = 241 * 431
483 110879 = 110879
484 91031 = 29 * 43 * 73
485 100799 = 100799
486 91439 = 61 * 1499
487 88079 = 88079
488 114215 = 5 * 53 * 431
489 205391 = 205391
490 120839 = 149 * 811
491 113039 = 113039
492 102959 = 149 * 691
493 140759 = 140759
494 118991 = 257 * 463
495 116471 = 116471
496 100751 = 7 * 37 * 389
497 115631 = 115631
498 113951 = 17 * 6703
499 122471 = 122471
500 96599 = 29 * 3331
501 101111 = 101111
502 103199 = 31 * 3329
503 129671 = 129671
504 101639 = 37 * 41 * 67
505 88919 = 88919
506 105311 = 53 * 1987
507 98999 = 98999
508 98159 = 103 * 953
509 140351 = 140351
510 92039 = 31 * 2969
511 130199 = 130199
512 132599 = 97 * 1367
513 115751 = 115751
514 178727 = 29 * 6163
515 126839 = 126839
516 114071 = 37 * 3083
517 106391 = 106391
518 159815 = 5 * 31963
519 97919 = 97919
520 112439 = 229 * 491
521 189983 = 189983
522 138911 = 31 * 4481
523 149111 = 149111
524 135959 = 79 * 1721
525 117911 = 117911
526 99791 = 73 * 1367
527 109199 = 109199
528 105551 = 59 * 1789
529 148991 = 148991
530 137759 = 347 * 397
531 112559 = 112559
532 108239 = 17 * 6367
533 95471 = 95471
534 102119 = 17 * 6007
535 131759 = 131759
536 123959 = 11 * 59 * 191
537 127679 = 127679
538 144119 = 31 * 4649
539 110039 = 110039
540 107159 = 13 * 8243
541 195887 = 195887
542 130031 = 11 * 11821
543 107351 = 107351
544 110759 = 11 * 10069
545 164999 = 164999
546 119999 = 11 * 10909
547 112031 = 112031
548 140999 = 19 * 41 * 181
549 199679 = 199679
550 127151 = 43 * 2957
551 112199 = 112199
552 128999 = 13 * 9923
553 121631 = 121631
554 247199 = 179 * 1381
555 104711 = 104711
556 111359 = 19 * 5861
557 177791 = 177791
558 175535 = 5 * 35107
559 115079 = 115079
560 127391 = 11 * 37 * 313
561 128831 = 128831
562 114791 = 191 * 601
563 121439 = 121439
564 121679 = 271 * 449
565 152879 = 152879
566 113879 = 263 * 433
567 138599 = 138599
568 130751 = 53 * 2467
569 216119 = 216119
570 147479 = 139 * 1061
571 144479 = 144479
572 129359 = 277 * 467
573 119759 = 119759
574 125831 = 29 * 4339
575 136751 = 136751
576 132431 = 13 * 61 * 167
577 123191 = 123191
578 126671 = 197 * 643
579 137639 = 137639
580 130919 = 89 * 1471
581 141671 = 141671
582 130511 = 19 * 6869
583 164471 = 164471
584 171839 = 227 * 757
585 135119 = 135119
586 158399 = 151 * 1049
587 232847 = 232847
588 134111 = 41 * 3271
589 119591 = 119591
590 140279 = 151 * 929
591 133559 = 133559
592 182591 = 157 * 1163
593 153191 = 153191
594 134879 = 29 * 4651
595 154439 = 154439
596 148799 = 7 * 29 * 733
597 149159 = 149159
598 176615 = 5 * 35323
599 138239 = 138239
600 148511 = 11 * 23 * 587
601 179591 = 179591
602 136919 = 23 * 5953
603 167471 = 167471
604 171311 = 7 * 24473
605 139079 = 139079
606 118271 = 101 * 1171
607 143519 = 143519
608 150839 = 13 * 41 * 283
609 128519 = 128519
610 142679 = 61 * 2339
611 142799 = 142799
612 139919 = 13 * 47 * 229
613 152039 = 152039
614 195551 = 17 * 11503
615 156719 = 156719
616 155039 = 197 * 787
617 161831 = 161831
618 152759 = 173 * 883
619 247607 = 247607
620 129191 = 23 * 41 * 137
621 188159 = 188159
622 190559 = 29 * 6571
623 186119 = 186119
624 151511 = 127 * 1193
625 234599 = 234599
626 156911 = 173 * 907
627 160079 = 160079
628 194255 = 5 * 38851
629 291287 = 291287
630 157031 = 7 * 22433
631 147551 = 147551
632 170519 = 41 * 4159
633 159431 = 159431
634 140591 = 11 * 12781
635 224351 = 224351
636 156239 = 23 * 6793
637 149519 = 149519
638 186359 = 157 * 1187
639 142271 = 142271
640 176231 = 11 * 37 * 433
641 201599 = 201599
642 168791 = 7 * 24113
643 177239 = 177239
644 175559 = 17 * 23 * 449
645 149399 = 149399
646 176039 = 401 * 439
647 165479 = 165479
648 183431 = 59 * 3109
649 162791 = 162791
650 227015 = 5 * 45403
651 145991 = 145991
652 165359 = 17 * 71 * 137
653 223319 = 223319
654 212231 = 83 * 2557
655 155399 = 155399
656 165959 = 67 * 2477
657 181919 = 181919
658 177119 = 37 * 4787
659 163679 = 163679
660 177551 = 11 * 16141
661 196439 = 196439
662 176879 = 73 * 2423
663 184631 = 184631
664 194711 = 11 * 31 * 571
665 189671 = 189671
666 154271 = 13 * 11867
667 147671 = 147671
668 160991 = 199 * 809
669 158759 = 158759
670 153599 = 269 * 571
671 185951 = 185951
672 152591 = 331 * 461
673 162839 = 162839
674 175271 = 53 * 3307
675 269879 = 269879
676 174191 = 373 * 467
677 601247 = 601247
678 177719 = 43 * 4133
679 276191 = 276191
680 181991 = 127 * 1433
681 269231 = 269231
682 185111 = 37 * 5003
683 188711 = 188711
684 171239 = 109 * 1571
685 227519 = 227519
686 187799 = 17 * 11047
687 224591 = 224591
688 214079 = 97 * 2207
689 206639 = 206639
690 184799 = 283 * 653
691 278087 = 278087
692 194879 = 23 * 37 * 229
693 169991 = 169991
694 198071 = 41 * 4831
695 184271 = 184271
696 184679 = 11 * 103 * 163
697 167879 = 167879
698 213839 = 43 * 4973
699 166319 = 166319
700 185471 = 11 * 13 * 1297
701 187871 = 187871
702 238271 = 11 * 21661
703 182159 = 182159
704 198239 = 137 * 1447
705 204599 = 204599
706 217031 = 31 * 7001
707 195599 = 195599
708 167639 = 53 * 3163
709 240959 = 240959
710 174719 = 379 * 461
711 183959 = 183959
712 209831 = 17 * 12343
713 174599 = 174599
714 204671 = 59 * 3469
715 218111 = 218111
716 171071 = 17 * 29 * 347
717 219911 = 219911
718 195719 = 19 * 10301
719 231839 = 231839
720 196031 = 11 * 71 * 251
721 220391 = 220391
722 254399 = 67 * 3797
723 180311 = 180311
724 203111 = 101 * 2011
725 226799 = 226799
726 175031 = 383 * 457
727 263951 = 263951
728 204239 = 7 * 163 * 179
729 178559 = 178559
730 194039 = 29 * 6691
731 374783 = 374783
732 202319 = 13 * 79 * 197
733 317279 = 317279
734 209711 = 43 * 4877
735 241511 = 241511
736 237551 = 139 * 1709
737 232391 = 232391
738 247511 = 11 * 22501
739 360959 = 360959
740 222719 = 7 * 31817
741 213359 = 213359
742 230831 = 19 * 12149
743 207191 = 207191
744 202991 = 41 * 4951
745 227471 = 227471
746 240191 = 7 * 34313
747 193751 = 193751
748 188471 = 29 * 67 * 97
749 264359 = 264359
750 218951 = 373 * 587
751 207479 = 207479
752 218231 = 13 * 16787
753 263111 = 263111
754 190319 = 83 * 2293
755 250871 = 250871
756 185279 = 41 * 4519
757 219119 = 219119
758 231791 = 7 * 33113
759 202751 = 202751
760 205271 = 11 * 18661
761 191231 = 191231
762 191351 = 179 * 1069
763 287279 = 287279
764 210311 = 19 * 11069
765 243239 = 243239
766 234911 = 61 * 3851
767 218279 = 218279
768 228791 = 109 * 2099
769 257591 = 257591
770 251039 = 17 * 14767
771 226511 = 226511
772 238391 = 17 * 37 * 379
773 235751 = 235751
774 224279 = 11 * 20389
775 265079 = 265079
776 222239 = 31 * 67 * 107
777 199559 = 199559
778 249959 = 43 * 5813
779 298031 = 298031
780 205631 = 61 * 3371
781 257711 = 257711
782 256511 = 199 * 1289
783 320591 = 320591
784 221231 = 197 * 1123
785 248351 = 248351
786 245159 = 61 * 4019
787 280199 = 280199
788 248519 = 257 * 967
789 223439 = 223439
790 234071 = 23 * 10177
791 276839 = 276839
792 225599 = 11 * 20509
793 260399 = 260399
794 302231 = 173 * 1747
795 235199 = 235199
796 224111 = 17 * 13183
797 211559 = 211559
798 298751 = 179 * 1669
799 231479 = 231479
800 233999 = 211 * 1109
801 284831 = 284831
802 346031 = 7 * 49433
803 298679 = 298679
804 212159 = 53 * 4003
805 217439 = 217439
806 264911 = 17 * 15583
807 249311 = 249311
808 201431 = 157 * 1283
809 238031 = 238031
810 232151 = 83 * 2797
811 228359 = 228359
812 267119 = 29 * 61 * 151
813 388319 = 388319
814 238871 = 53 * 4507
815 279551 = 279551
816 236759 = 17 * 19 * 733
817 467399 = 467399
818 230711 = 13 * 17747
819 257351 = 257351
820 242759 = 11 * 29 * 761
821 225671 = 225671
822 271319 = 181 * 1499
823 382919 = 382919
824 230879 = 11 * 139 * 151
825 316391 = 316391
826 273479 = 17 * 16087
827 251159 = 251159
828 238559 = 191 * 1249
829 289439 = 289439
830 266591 = 13 * 20507
831 236519 = 236519
832 239951 = 19 * 73 * 173
833 282959 = 282959
834 300551 = 37 * 8123
835 334991 = 334991
836 274559 = 463 * 593
837 255239 = 255239
838 274511 = 211 * 1301
839 336599 = 336599
840 246791 = 19 * 31 * 419
841 253679 = 253679
842 239399 = 41 * 5839
843 262391 = 262391
844 262631 = 181 * 1451
845 335999 = 335999
846 290111 = 19 * 15269
847 269519 = 269519
848 344351 = 7 * 49193
849 479879 = 479879
850 266279 = 13 * 20483
851 267959 = 267959
852 310631 = 19 * 16349
853 273719 = 273719
854 256871 = 61 * 4211
855 285071 = 285071
856 254999 = 19 * 13421
857 551951 = 551951
858 246671 = 97 * 2543
859 454991 = 454991
860 293471 = 17 * 61 * 283
861 302111 = 302111
862 345959 = 347 * 997
863 255191 = 255191
864 257039 = 37 * 6947
865 306479 = 306479
866 386759 = 439 * 881
867 354791 = 354791
868 288791 = 487 * 593
869 261791 = 261791
870 277079 = 11 * 25189
871 306239 = 306239
872 314639 = 13 * 24203
873 265151 = 265151
874 313799 = 311 * 1009
875 250799 = 250799
876 338519 = 503 * 673
877 297359 = 297359
878 319751 = 19 * 16829
879 378671 = 378671
880 239279 = 29 * 37 * 223
881 291191 = 291191
882 286919 = 19 * 15101
883 267671 = 267671
884 325415 = 5 * 37 * 1759
885 305231 = 305231
886 281111 = 109 * 2579
887 580031 = 580031
888 270479 = 11 * 67 * 367
889 440711 = 440711
890 264239 = 139 * 1901
891 327479 = 327479
892 250631 = 17 * 23 * 641
893 395111 = 395111
894 259871 = 151 * 1721
895 368471 = 368471
896 286079 = 43 * 6653
897 391151 = 391151
898 329159 = 101 * 3259
899 361919 = 361919
900 299519 = 11 * 73 * 373
901 417191 = 417191
902 320711 = 29 * 11059
903 300431 = 300431
904 324191 = 7 * 29 * 1597
905 322871 = 322871
906 396791 = 463 * 857
907 415631 = 415631
908 373295 = 5 * 13 * 5743
909 363719 = 363719
910 308831 = 53 * 5827
911 290351 = 290351
912 296999 = 23 * 37 * 349
913 357671 = 357671
914 390719 = 7 * 55817
915 342599 = 342599
916 280271 = 31 * 9041
917 307919 = 307919
918 277031 = 53 * 5227
919 303551 = 303551
920 304079 = 17 * 31 * 577
921 340919 = 340919
922 348071 = 107 * 3253
923 450479 = 450479
924 311519 = 13 * 31 * 773
925 314159 = 314159
926 349151 = 11 * 31741
927 364031 = 364031
928 360191 = 13 * 103 * 269
929 283799 = 283799
930 277679 = 23 * 12073
931 475271 = 475271
932 316151 = 11 * 41 * 701
933 317831 = 317831
934 349751 = 367 * 953
935 336551 = 336551
936 305399 = 29 * 10531
937 366239 = 366239
938 362039 = 277 * 1307
939 293999 = 293999
940 311351 = 23 * 13537
941 302279 = 302279
942 381671 = 59 * 6469
943 284231 = 284231
944 350831 = 13 * 26987
945 350159 = 350159
946 292991 = 67 * 4373
947 291359 = 291359
948 373511 = 311 * 1201
949 345791 = 345791
950 351911 = 7 * 50273
951 325079 = 325079
952 376031 = 37 * 10163
953 437111 = 437111
954 352439 = 31 * 11369
955 379679 = 379679
956 364199 = 11 * 113 * 293
957 413951 = 413951
958 426719 = 23 * 18553
959 405719 = 405719
960 338351 = 13 * 17 * 1531
961 383759 = 383759
962 373799 = 43 * 8693
963 289511 = 289511
964 313871 = 17 * 37 * 499
965 325751 = 325751
966 355631 = 349 * 1019
967 600959 = 600959
968 332111 = 13 * 59 * 433
969 382751 = 382751
970 336839 = 167 * 2017
971 494591 = 494591
972 351119 = 311 * 1129
973 348911 = 348911
974 301391 = 41 * 7351
975 376631 = 376631
976 341519 = 523 * 653
977 389399 = 389399
978 353279 = 149 * 2371
979 353471 = 353471
980 348311 = 79 * 4409
981 341879 = 341879
982 452399 = 37 * 12227
983 381911 = 381911
984 355319 = 19 * 18701
985 369071 = 369071
986 313199 = 41 * 7639
987 452759 = 452759
988 408239 = 13 * 31 * 1013
989 322559 = 322559
990 396431 = 7 * 56633
991 327071 = 327071
992 307271 = 109 * 2819
993 454079 = 454079
994 323111 = 103 * 3137
995 330431 = 330431
996 3
111 15359 = 15359
I don't know about surjectivity of class numbers. I imagine so.
For a list of the first time each small class number occurs, see [OEIS060649][1], class numbers up to 50
I wrote a little program,
1 3 = 3
2 15 = 3 * 5
3 23 = 23
4 39 = 3 * 13
5 47 = 47
6 87 = 3 * 29
7 71 = 71
8 95 = 5 * 19
9 199 = 199
10 119 = 7 * 17
11 167 = 167
12 231 = 3 * 7 * 11
13 191 = 191
14 215 = 5 * 43
15 239 = 239
16 399 = 3 * 7 * 19
17 383 = 383
18 335 = 5 * 67
19 311 = 311
20 455 = 5 * 7 * 13
21 431 = 431
22 591 = 3 * 197
23 647 = 647
24 695 = 5 * 139
25 479 = 479
26 551 = 19 * 29
27 983 = 983
28 831 = 3 * 277
29 887 = 887
30 671 = 11 * 61
31 719 = 719
32 791 = 7 * 113
33 839 = 839
34 1079 = 13 * 83
35 1031 = 1031
36 959 = 7 * 137
37 1487 = 1487
38 1199 = 11 * 109
39 1439 = 1439
40 1271 = 31 * 41
41 1151 = 1151
42 1959 = 3 * 653
43 1847 = 1847
44 1391 = 13 * 107
45 1319 = 1319
46 2615 = 5 * 523
47 3023 = 3023
48 1751 = 17 * 103
49 1511 = 1511
50 1799 = 7 * 257
51 1559 = 1559
52 1679 = 23 * 73
53 2711 = 2711
54 2759 = 31 * 89
55 4463 = 4463
56 1991 = 11 * 181
57 2591 = 2591
58 2231 = 23 * 97
59 2399 = 2399
60 2159 = 17 * 127
61 3863 = 3863
62 2471 = 7 * 353
63 2351 = 2351
64 2519 = 11 * 229
65 3527 = 3527
66 3431 = 47 * 73
67 3719 = 3719
68 2831 = 19 * 149
69 3119 = 3119
70 3239 = 41 * 79
71 5471 = 5471
72 3311 = 7 * 11 * 43
73 2999 = 2999
74 4151 = 7 * 593
75 4703 = 4703
76 3071 = 37 * 83
77 6263 = 6263
78 5111 = 19 * 269
79 4391 = 4391
80 5183 = 71 * 73
81 3671 = 3671
82 3839 = 11 * 349
83 3911 = 3911
84 4031 = 29 * 139
85 4079 = 4079
86 6767 = 67 * 101
87 5279 = 5279
88 4199 = 13 * 17 * 19
89 6311 = 6311
90 5951 = 11 * 541
91 4679 = 4679
92 4991 = 7 * 23 * 31
93 5351 = 5351
94 7367 = 53 * 139
95 6959 = 6959
96 6071 = 13 * 467
97 5519 = 5519
98 6191 = 41 * 151
99 5591 = 5591
100 7991 = 61 * 131
101 5879 = 5879
102 9383 = 11 * 853
103 13799 = 13799
104 9359 = 7^2 * 191
105 6719 = 6719
106 7631 = 13 * 587
107 8231 = 8231
108 5759 = 13 * 443
109 5711 = 5711
110 7751 = 23 * 337
111 15359 = 15359
112 7895 = 5 * 1579
113 8039 = 8039
114 6431 = 59 * 109
115 7559 = 7559
116 7271 = 11 * 661
117 6551 = 6551
118 8351 = 7 * 1193
119 9791 = 9791
120 7391 = 19 * 389
121 8111 = 8111
122 11735 = 5 * 2347
123 14087 = 14087
124 9119 = 11 * 829
125 11519 = 11519
126 8279 = 17 * 487
127 19463 = 19463
128 10295 = 5 * 29 * 71
129 9551 = 9551
130 8879 = 13 * 683
131 12671 = 12671
132 8711 = 31 * 281
133 9719 = 9719
134 8399 = 37 * 227
135 8951 = 8951
136 9911 = 11 * 17 * 53
137 15287 = 15287
138 9071 = 47 * 193
139 9239 = 9239
140 13319 = 19 * 701
141 11399 = 11399
142 15311 = 61 * 251
143 11471 = 11471
144 11591 = 67 * 173
145 14879 = 14879
146 13199 = 67 * 197
147 13679 = 13679
148 11231 = 11 * 1021
149 17783 = 17783
150 11879 = 7 * 1697
151 22727 = 22727
152 14111 = 103 * 137
153 10391 = 10391
154 12311 = 13 * 947
155 20807 = 20807
156 10919 = 61 * 179
157 25847 = 25847
158 15935 = 5 * 3187
159 12479 = 12479
160 15431 = 13 * 1187
161 12239 = 12239
162 13919 = 31 * 449
163 40039 = 40039
164 14231 = 7 * 19 * 107
165 12911 = 12911
166 26279 = 11 * 2389
167 15671 = 15671
168 18599 = 7 * 2657
169 24551 = 24551
170 23183 = 97 * 239
171 13751 = 13751
172 17135 = 5 * 23 * 149
173 14159 = 14159
174 13439 = 89 * 151
175 18719 = 18719
176 18431 = 7 * 2633
177 22871 = 22871
178 13991 = 17 * 823
179 17519 = 17519
180 15839 = 47 * 337
181 14759 = 14759
182 14999 = 53 * 283
183 16631 = 16631
184 21791 = 7 * 11 * 283
185 14951 = 14951
186 20591 = 59 * 349
187 25583 = 25583
188 20951 = 7 * 41 * 73
189 22511 = 22511
190 16799 = 107 * 157
191 22271 = 22271
192 16511 = 11 * 19 * 79
193 26591 = 26591
194 20279 = 7 * 2897
195 15791 = 15791
196 19151 = 11 * 1741
197 24071 = 24071
198 17951 = 29 * 619
199 19991 = 19991
200 21311 = 101 * 211
201 32423 = 32423
202 17111 = 71 * 241
203 19031 = 19031
204 20039 = 29 * 691
205 18119 = 18119
206 20471 = 11 * 1861
207 34583 = 34583
208 19631 = 67 * 293
209 28151 = 28151
210 28079 = 43 * 653
211 39791 = 39791
212 20159 = 19 * 1061
213 18191 = 18191
214 21551 = 23 * 937
215 24359 = 24359
216 22799 = 7 * 3257
217 22679 = 22679
218 24839 = 59 * 421
219 24671 = 24671
220 26039 = 13 * 2003
221 26711 = 26711
222 22151 = 17 * 1303
223 44111 = 44111
224 25751 = 11 * 2341
225 25031 = 25031
226 25511 = 97 * 263
227 24239 = 24239
228 21479 = 47 * 457
229 23399 = 23399
230 25079 = 31 * 809
231 26759 = 26759
232 26351 = 13 * 2027
233 28871 = 28871
234 23231 = 13 * 1787
235 37991 = 37991
236 27599 = 11 * 13 * 193
237 33071 = 33071
238 28271 = 17 * 1663
239 25679 = 25679
240 26519 = 23 * 1153
241 37511 = 37511
242 23999 = 103 * 233
243 29399 = 29399
244 28391 = 11 * 29 * 89
245 26879 = 26879
246 34991 = 11 * 3181
247 27191 = 27191
248 25871 = 41 * 631
249 27551 = 27551
250 30551 = 137 * 223
251 39119 = 39119
252 27719 = 53 * 523
253 35831 = 35831
254 42335 = 5 * 8467
255 40559 = 40559
256 39431 = 7 * 43 * 131
257 31799 = 31799
258 30791 = 41 * 751
259 27431 = 27431
260 32759 = 17 * 41 * 47
261 38711 = 38711
262 37751 = 7 * 5393
263 36671 = 36671
264 29279 = 19 * 23 * 67
265 48023 = 48023
266 30239 = 11 * 2749
267 44711 = 44711
268 38111 = 23 * 1657
269 34919 = 34919
270 31919 = 59 * 541
271 83903 = 83903
272 30719 = 13 * 17 * 139
273 41999 = 41999
274 32639 = 127 * 257
275 38351 = 38351
276 36839 = 11 * 17 * 197
277 55871 = 55871
278 33431 = 101 * 331
279 33479 = 33479
280 38279 = 101 * 379
281 41039 = 41039
282 32471 = 19 * 1709
283 48311 = 48311
284 38471 = 17 * 31 * 73
285 35591 = 35591
286 42671 = 71 * 601
287 47591 = 47591
288 36431 = 17 * 2143
289 31391 = 31391
290 40799 = 11 * 3709
291 36599 = 36599
292 34151 = 13 * 37 * 71
293 43151 = 43151
294 49079 = 17 * 2887
295 51239 = 51239
296 46079 = 11 * 59 * 71
297 42839 = 42839
298 38951 = 11 * 3541
299 59879 = 59879
300 34271 = 43 * 797
301 43319 = 43319
302 61079 = 103 * 593
303 53279 = 53279
304 39311 = 19 * 2069
305 35279 = 35279
306 50879 = 83 * 613
307 56711 = 56711
308 40871 = 23 * 1777
309 43991 = 43991
310 41159 = 79 * 521
311 40031 = 40031
312 43559 = 43 * 1013
313 58679 = 58679
314 68631 = 3 * 22877
315 44351 = 44351
316 48671 = 7 * 17 * 409
317 42719 = 42719
318 45839 = 23 * 1993
319 62639 = 62639
320 42479 = 107 * 397
321 80687 = 80687
322 51959 = 223 * 233
323 49391 = 49391
324 39959 = 31 * 1289
325 38639 = 38639
326 56831 = 17 * 3343
327 46511 = 46511
328 63071 = 59 * 1069
329 43391 = 43391
330 58319 = 29 * 2011
331 44519 = 44519
332 51119 = 17 * 31 * 97
333 75431 = 75431
334 49271 = 29 * 1699
335 56591 = 56591
336 47879 = 13 * 29 * 127
337 46199 = 46199
338 78359 = 127 * 617
339 52919 = 52919
340 51911 = 23 * 37 * 61
341 67271 = 67271
342 54071 = 139 * 389
343 52631 = 52631
344 47519 = 19 * 41 * 61
345 58511 = 58511
346 56111 = 11 * 5101
347 75767 = 75767
348 52751 = 17 * 29 * 107
349 79967 = 79967
350 47759 = 163 * 293
351 66071 = 66071
352 45239 = 19 * 2381
353 61031 = 61031
354 48551 = 47 * 1033
355 53759 = 53759
356 64391 = 19 * 3389
357 49871 = 49871
358 62879 = 227 * 277
359 50111 = 50111
360 58799 = 13 * 4523
361 50951 = 50951
362 54599 = 71 * 769
363 64319 = 64319
364 60791 = 31 * 37 * 53
365 64151 = 64151
366 64559 = 11 * 5869
367 56999 = 56999
368 65639 = 7 * 9377
369 89231 = 89231
370 71759 = 73 * 983
371 82031 = 82031
372 67199 = 11 * 41 * 149
373 57791 = 57791
374 54911 = 43 * 1277
375 53231 = 53231
376 55319 = 11 * 47 * 107
377 73751 = 73751
378 62999 = 73 * 863
379 59351 = 59351
380 62711 = 11 * 5701
381 57119 = 57119
382 61199 = 19 * 3221
383 105167 = 105167
384 56759 = 211 * 269
385 78311 = 78311
386 69359 = 43 * 1613
387 58439 = 58439
388 73295 = 5 * 107 * 137
389 91079 = 91079
390 69551 = 157 * 443
391 78839 = 78839
392 77159 = 19 * 31 * 131
393 74231 = 74231
394 73799 = 11 * 6709
395 61151 = 61151
396 74711 = 7 * 13 * 821
397 84431 = 84431
398 60359 = 13 * 4643
399 61871 = 61871
400 67031 = 17 * 3943
401 73079 = 73079
402 72791 = 83 * 877
403 71399 = 71399
404 83279 = 7 * 11897
405 64679 = 64679
406 73391 = 79 * 929
407 70199 = 70199
408 71279 = 13 * 5483
409 67679 = 67679
410 85271 = 71 * 1201
411 87671 = 87671
412 73559 = 17 * 4327
413 100559 = 100559
414 73031 = 7 * 10433
415 81119 = 81119
416 71111 = 17 * 47 * 89
417 88799 = 88799
418 90119 = 227 * 397
419 151247 = 151247
420 74399 = 13 * 59 * 97
421 72959 = 72959
422 70391 = 43 * 1637
423 63839 = 63839
424 65159 = 23 * 2833
425 84719 = 84719
426 86831 = 31 * 2801
427 79631 = 79631
428 93959 = 17 * 5527
429 75479 = 75479
430 108479 = 7 * 15497
431 102359 = 102359
432 72071 = 97 * 743
433 96431 = 96431
434 68591 = 113 * 607
435 93911 = 93911
436 73631 = 29 * 2539
437 124823 = 124823
438 76439 = 11 * 6949
439 109391 = 109391
440 71231 = 19 * 23 * 163
441 92951 = 92951
442 92231 = 149 * 619
443 87911 = 87911
444 104279 = 7 * 14897
445 82799 = 82799
446 82199 = 13 * 6323
447 124991 = 124991
448 78119 = 191 * 409
449 128351 = 128351
450 75599 = 17 * 4447
451 141311 = 141311
452 83879 = 37 * 2267
453 83639 = 83639
454 75071 = 41 * 1831
455 80471 = 80471
456 97991 = 29 * 31 * 109
457 90359 = 90359
458 98831 = 23 * 4297
459 92399 = 92399
460 82631 = 19 * 4349
461 138959 = 138959
462 81311 = 17 * 4783
463 90191 = 90191
464 85679 = 11 * 7789
465 117959 = 117959
466 82991 = 37 * 2243
467 125639 = 125639
468 79439 = 19 * 37 * 113
469 87071 = 87071
470 85151 = 11 * 7741
471 107999 = 107999
472 106679 = 107 * 997
473 135599 = 135599
474 85511 = 233 * 367
475 99839 = 99839
476 88871 = 181 * 491
477 110711 = 110711
478 109031 = 13 * 8387
479 115319 = 115319
480 84839 = 43 * 1973
481 153071 = 153071
482 103871 = 241 * 431
483 110879 = 110879
484 91031 = 29 * 43 * 73
485 100799 = 100799
486 91439 = 61 * 1499
487 88079 = 88079
488 114215 = 5 * 53 * 431
489 205391 = 205391
490 120839 = 149 * 811
491 113039 = 113039
492 102959 = 149 * 691
493 140759 = 140759
494 118991 = 257 * 463
495 116471 = 116471
496 100751 = 7 * 37 * 389
497 115631 = 115631
498 113951 = 17 * 6703
499 122471 = 122471
500 96599 = 29 * 3331
501 101111 = 101111
502 103199 = 31 * 3329
503 129671 = 129671
504 101639 = 37 * 41 * 67
505 88919 = 88919
506 105311 = 53 * 1987
507 98999 = 98999
508 98159 = 103 * 953
509 140351 = 140351
510 92039 = 31 * 2969
511 130199 = 130199
512 132599 = 97 * 1367
513 115751 = 115751
514 178727 = 29 * 6163
515 126839 = 126839
516 114071 = 37 * 3083
517 106391 = 106391
518 159815 = 5 * 31963
519 97919 = 97919
520 112439 = 229 * 491
521 189983 = 189983
522 138911 = 31 * 4481
523 149111 = 149111
524 135959 = 79 * 1721
525 117911 = 117911
526 99791 = 73 * 1367
527 109199 = 109199
528 105551 = 59 * 1789
529 148991 = 148991
530 137759 = 347 * 397
531 112559 = 112559
532 108239 = 17 * 6367
533 95471 = 95471
534 102119 = 17 * 6007
535 131759 = 131759
536 123959 = 11 * 59 * 191
537 127679 = 127679
538 144119 = 31 * 4649
539 110039 = 110039
540 107159 = 13 * 8243
541 195887 = 195887
542 130031 = 11 * 11821
543 107351 = 107351
544 110759 = 11 * 10069
545 164999 = 164999
546 119999 = 11 * 10909
547 112031 = 112031
548 140999 = 19 * 41 * 181
549 199679 = 199679
550 127151 = 43 * 2957
551 112199 = 112199
552 128999 = 13 * 9923
553 121631 = 121631
554 247199 = 179 * 1381
555 104711 = 104711
556 111359 = 19 * 5861
557 177791 = 177791
558 175535 = 5 * 35107
559 115079 = 115079
560 127391 = 11 * 37 * 313
561 128831 = 128831
562 114791 = 191 * 601
563 121439 = 121439
564 121679 = 271 * 449
565 152879 = 152879
566 113879 = 263 * 433
567 138599 = 138599
568 130751 = 53 * 2467
569 216119 = 216119
570 147479 = 139 * 1061
571 144479 = 144479
572 129359 = 277 * 467
573 119759 = 119759
574 125831 = 29 * 4339
575 136751 = 136751
576 132431 = 13 * 61 * 167
577 123191 = 123191
578 126671 = 197 * 643
579 137639 = 137639
580 130919 = 89 * 1471
581 141671 = 141671
582 130511 = 19 * 6869
583 164471 = 164471
584 171839 = 227 * 757
585 135119 = 135119
586 158399 = 151 * 1049
587 232847 = 232847
588 134111 = 41 * 3271
589 119591 = 119591
590 140279 = 151 * 929
591 133559 = 133559
592 182591 = 157 * 1163
593 153191 = 153191
594 134879 = 29 * 4651
595 154439 = 154439
596 148799 = 7 * 29 * 733
597 149159 = 149159
598 176615 = 5 * 35323
599 138239 = 138239
600 148511 = 11 * 23 * 587
601 179591 = 179591
602 136919 = 23 * 5953
603 167471 = 167471
604 171311 = 7 * 24473
605 139079 = 139079
606 118271 = 101 * 1171
607 143519 = 143519
608 150839 = 13 * 41 * 283
609 128519 = 128519
610 142679 = 61 * 2339
611 142799 = 142799
612 139919 = 13 * 47 * 229
613 152039 = 152039
614 195551 = 17 * 11503
615 156719 = 156719
616 155039 = 197 * 787
617 161831 = 161831
618 152759 = 173 * 883
619 247607 = 247607
620 129191 = 23 * 41 * 137
621 188159 = 188159
622 190559 = 29 * 6571
623 186119 = 186119
624 151511 = 127 * 1193
625 234599 = 234599
626 156911 = 173 * 907
627 160079 = 160079
628 194255 = 5 * 38851
629 291287 = 291287
630 157031 = 7 * 22433
631 147551 = 147551
632 170519 = 41 * 4159
633 159431 = 159431
634 140591 = 11 * 12781
635 224351 = 224351
636 156239 = 23 * 6793
637 149519 = 149519
638 186359 = 157 * 1187
639 142271 = 142271
640 176231 = 11 * 37 * 433
641 201599 = 201599
642 168791 = 7 * 24113
643 177239 = 177239
644 175559 = 17 * 23 * 449
645 149399 = 149399
646 176039 = 401 * 439
647 165479 = 165479
648 183431 = 59 * 3109
649 162791 = 162791
650 227015 = 5 * 45403
651 145991 = 145991
652 165359 = 17 * 71 * 137
653 223319 = 223319
654 212231 = 83 * 2557
655 155399 = 155399
656 165959 = 67 * 2477
657 181919 = 181919
658 177119 = 37 * 4787
659 163679 = 163679
660 177551 = 11 * 16141
661 196439 = 196439
662 176879 = 73 * 2423
663 184631 = 184631
664 194711 = 11 * 31 * 571
665 189671 = 189671
666 154271 = 13 * 11867
667 147671 = 147671
668 160991 = 199 * 809
669 158759 = 158759
670 153599 = 269 * 571
671 185951 = 185951
672 152591 = 331 * 461
673 162839 = 162839
674 175271 = 53 * 3307
675 269879 = 269879
676 174191 = 373 * 467
677 601247 = 601247
678 177719 = 43 * 4133
679 276191 = 276191
680 181991 = 127 * 1433
681 269231 = 269231
682 185111 = 37 * 5003
683 188711 = 188711
684 171239 = 109 * 1571
685 227519 = 227519
686 187799 = 17 * 11047
687 224591 = 224591
688 214079 = 97 * 2207
689 206639 = 206639
690 184799 = 283 * 653
691 278087 = 278087
692 194879 = 23 * 37 * 229
693 169991 = 169991
694 198071 = 41 * 4831
695 184271 = 184271
696 184679 = 11 * 103 * 163
697 167879 = 167879
698 213839 = 43 * 4973
699 166319 = 166319
700 185471 = 11 * 13 * 1297
701 187871 = 187871
702 238271 = 11 * 21661
703 182159 = 182159
704 198239 = 137 * 1447
705 204599 = 204599
706 217031 = 31 * 7001
707 195599 = 195599
708 167639 = 53 * 3163
709 240959 = 240959
710 174719 = 379 * 461
711 183959 = 183959
712 209831 = 17 * 12343
713 174599 = 174599
714 204671 = 59 * 3469
715 218111 = 218111
716 171071 = 17 * 29 * 347
717 219911 = 219911
718 195719 = 19 * 10301
719 231839 = 231839
720 196031 = 11 * 71 * 251
721 220391 = 220391
722 254399 = 67 * 3797
723 180311 = 180311
724 203111 = 101 * 2011
725 226799 = 226799
726 175031 = 383 * 457
727 263951 = 263951
728 204239 = 7 * 163 * 179
729 178559 = 178559
730 194039 = 29 * 6691
731 374783 = 374783
732 202319 = 13 * 79 * 197
733 317279 = 317279
734 209711 = 43 * 4877
735 241511 = 241511
736 237551 = 139 * 1709
737 232391 = 232391
738 247511 = 11 * 22501
739 360959 = 360959
740 222719 = 7 * 31817
741 213359 = 213359
742 230831 = 19 * 12149
743 207191 = 207191
744 202991 = 41 * 4951
745 227471 = 227471
746 240191 = 7 * 34313
747 193751 = 193751
748 188471 = 29 * 67 * 97
749 264359 = 264359
750 218951 = 373 * 587
751 207479 = 207479
752 218231 = 13 * 16787
753 263111 = 263111
754 190319 = 83 * 2293
755 250871 = 250871
756 185279 = 41 * 4519
757 219119 = 219119
758 231791 = 7 * 33113
759 202751 = 202751
760 205271 = 11 * 18661
761 191231 = 191231
762 191351 = 179 * 1069
763 287279 = 287279
764 210311 = 19 * 11069
765 243239 = 243239
766 234911 = 61 * 3851
767 218279 = 218279
768 228791 = 109 * 2099
769 257591 = 257591
770 251039 = 17 * 14767
771 226511 = 226511
772 238391 = 17 * 37 * 379
773 235751 = 235751
774 224279 = 11 * 20389
775 265079 = 265079
776 222239 = 31 * 67 * 107
777 199559 = 199559
778 249959 = 43 * 5813
779 298031 = 298031
780 205631 = 61 * 3371
781 257711 = 257711
782 256511 = 199 * 1289
783 320591 = 320591
784 221231 = 197 * 1123
785 248351 = 248351
786 245159 = 61 * 4019
787 280199 = 280199
788 248519 = 257 * 967
789 223439 = 223439
790 234071 = 23 * 10177
791 276839 = 276839
792 225599 = 11 * 20509
793 260399 = 260399
794 302231 = 173 * 1747
795 235199 = 235199
796 224111 = 17 * 13183
797 211559 = 211559
798 298751 = 179 * 1669
799 231479 = 231479
800 233999 = 211 * 1109
801 284831 = 284831
802 346031 = 7 * 49433
803 298679 = 298679
804 212159 = 53 * 4003
805 217439 = 217439
806 264911 = 17 * 15583
807 249311 = 249311
808 201431 = 157 * 1283
809 238031 = 238031
810 232151 = 83 * 2797
811 228359 = 228359
812 267119 = 29 * 61 * 151
813 388319 = 388319
814 238871 = 53 * 4507
815 279551 = 279551
816 236759 = 17 * 19 * 733
817 467399 = 467399
818 230711 = 13 * 17747
819 257351 = 257351
820 242759 = 11 * 29 * 761
821 225671 = 225671
822 271319 = 181 * 1499
823 382919 = 382919
824 230879 = 11 * 139 * 151
825 316391 = 316391
826 273479 = 17 * 16087
827 251159 = 251159
828 238559 = 191 * 1249
829 289439 = 289439
830 266591 = 13 * 20507
831 236519 = 236519
832 239951 = 19 * 73 * 173
833 282959 = 282959
834 300551 = 37 * 8123
835 334991 = 334991
836 274559 = 463 * 593
837 255239 = 255239
838 274511 = 211 * 1301
839 336599 = 336599
840 246791 = 19 * 31 * 419
841 253679 = 253679
842 239399 = 41 * 5839
843 262391 = 262391
844 262631 = 181 * 1451
845 335999 = 335999
846 290111 = 19 * 15269
847 269519 = 269519
848 344351 = 7 * 49193
849 479879 = 479879
850 266279 = 13 * 20483
851 267959 = 267959
852 310631 = 19 * 16349
853 273719 = 273719
854 256871 = 61 * 4211
855 285071 = 285071
856 254999 = 19 * 13421
857 551951 = 551951
858 246671 = 97 * 2543
859 454991 = 454991
860 293471 = 17 * 61 * 283
861 302111 = 302111
862 345959 = 347 * 997
863 255191 = 255191
864 257039 = 37 * 6947
865 306479 = 306479
866 386759 = 439 * 881
867 354791 = 354791
868 288791 = 487 * 593
869 261791 = 261791
870 277079 = 11 * 25189
871 306239 = 306239
872 314639 = 13 * 24203
873 265151 = 265151
874 313799 = 311 * 1009
875 250799 = 250799
876 338519 = 503 * 673
877 297359 = 297359
878 319751 = 19 * 16829
879 378671 = 378671
880 239279 = 29 * 37 * 223
881 291191 = 291191
882 286919 = 19 * 15101
883 267671 = 267671
884 325415 = 5 * 37 * 1759
885 305231 = 305231
886 281111 = 109 * 2579
887 580031 = 580031
888 270479 = 11 * 67 * 367
889 440711 = 440711
890 264239 = 139 * 1901
891 327479 = 327479
892 250631 = 17 * 23 * 641
893 395111 = 395111
894 259871 = 151 * 1721
895 368471 = 368471
896 286079 = 43 * 6653
897 391151 = 391151
898 329159 = 101 * 3259
899 361919 = 361919
900 299519 = 11 * 73 * 373
901 417191 = 417191
902 320711 = 29 * 11059
903 300431 = 300431
904 324191 = 7 * 29 * 1597
905 322871 = 322871
906 396791 = 463 * 857
907 415631 = 415631
908 373295 = 5 * 13 * 5743
909 363719 = 363719
910 308831 = 53 * 5827
911 290351 = 290351
912 296999 = 23 * 37 * 349
913 357671 = 357671
914 390719 = 7 * 55817
915 342599 = 342599
916 280271 = 31 * 9041
917 307919 = 307919
918 277031 = 53 * 5227
919 303551 = 303551
920 304079 = 17 * 31 * 577
921 340919 = 340919
922 348071 = 107 * 3253
923 450479 = 450479
924 311519 = 13 * 31 * 773
925 314159 = 314159
926 349151 = 11 * 31741
927 364031 = 364031
928 360191 = 13 * 103 * 269
929 283799 = 283799
930 277679 = 23 * 12073
931 475271 = 475271
932 316151 = 11 * 41 * 701
933 317831 = 317831
934 349751 = 367 * 953
935 336551 = 336551
936 305399 = 29 * 10531
937 366239 = 366239
938 362039 = 277 * 1307
939 293999 = 293999
940 311351 = 23 * 13537
941 302279 = 302279
942 381671 = 59 * 6469
943 284231 = 284231
944 350831 = 13 * 26987
945 350159 = 350159
946 292991 = 67 * 4373
947 291359 = 291359
948 373511 = 311 * 1201
949 345791 = 345791
950 351911 = 7 * 50273
951 325079 = 325079
952 376031 = 37 * 10163
953 437111 = 437111
954 352439 = 31 * 11369
955 379679 = 379679
956 364199 = 11 * 113 * 293
957 413951 = 413951
958 426719 = 23 * 18553
959 405719 = 405719
960 338351 = 13 * 17 * 1531
961 383759 = 383759
962 373799 = 43 * 8693
963 289511 = 289511
964 313871 = 17 * 37 * 499
965 325751 = 325751
966 355631 = 349 * 1019
967 600959 = 600959
968 332111 = 13 * 59 * 433
969 382751 = 382751
970 336839 = 167 * 2017
971 494591 = 494591
972 351119 = 311 * 1129
973 348911 = 348911
974 301391 = 41 * 7351
975 376631 = 376631
976 341519 = 523 * 653
977 389399 = 389399
978 353279 = 149 * 2371
979 353471 = 353471
980 348311 = 79 * 4409
981 341879 = 341879
982 452399 = 37 * 12227
983 381911 = 381911
984 355319 = 19 * 18701
985 369071 = 369071
986 313199 = 41 * 7639
987 452759 = 452759
988 408239 = 13 * 31 * 1013
989 322559 = 322559
990 396431 = 7 * 56633
991 327071 = 327071
992 307271 = 109 * 2819
993 454079 = 454079
994 323111 = 103 * 3137
995 330431 = 330431
996 3
I don't know about surjectivity of class numbers. I imagine so. See OEIS
I wrote a little program up to 1000, here it is up to 111. The first number that achieves a given class number tends to be squarefree, an exception being h=104.
1 3 = 3
2 15 = 3 * 5
3 23 = 23
4 39 = 3 * 13
5 47 = 47
6 87 = 3 * 29
7 71 = 71
8 95 = 5 * 19
9 199 = 199
10 119 = 7 * 17
11 167 = 167
12 231 = 3 * 7 * 11
13 191 = 191
14 215 = 5 * 43
15 239 = 239
16 399 = 3 * 7 * 19
17 383 = 383
18 335 = 5 * 67
19 311 = 311
20 455 = 5 * 7 * 13
21 431 = 431
22 591 = 3 * 197
23 647 = 647
24 695 = 5 * 139
25 479 = 479
26 551 = 19 * 29
27 983 = 983
28 831 = 3 * 277
29 887 = 887
30 671 = 11 * 61
31 719 = 719
32 791 = 7 * 113
33 839 = 839
34 1079 = 13 * 83
35 1031 = 1031
36 959 = 7 * 137
37 1487 = 1487
38 1199 = 11 * 109
39 1439 = 1439
40 1271 = 31 * 41
41 1151 = 1151
42 1959 = 3 * 653
43 1847 = 1847
44 1391 = 13 * 107
45 1319 = 1319
46 2615 = 5 * 523
47 3023 = 3023
48 1751 = 17 * 103
49 1511 = 1511
50 1799 = 7 * 257
51 1559 = 1559
52 1679 = 23 * 73
53 2711 = 2711
54 2759 = 31 * 89
55 4463 = 4463
56 1991 = 11 * 181
57 2591 = 2591
58 2231 = 23 * 97
59 2399 = 2399
60 2159 = 17 * 127
61 3863 = 3863
62 2471 = 7 * 353
63 2351 = 2351
64 2519 = 11 * 229
65 3527 = 3527
66 3431 = 47 * 73
67 3719 = 3719
68 2831 = 19 * 149
69 3119 = 3119
70 3239 = 41 * 79
71 5471 = 5471
72 3311 = 7 * 11 * 43
73 2999 = 2999
74 4151 = 7 * 593
75 4703 = 4703
76 3071 = 37 * 83
77 6263 = 6263
78 5111 = 19 * 269
79 4391 = 4391
80 5183 = 71 * 73
81 3671 = 3671
82 3839 = 11 * 349
83 3911 = 3911
84 4031 = 29 * 139
85 4079 = 4079
86 6767 = 67 * 101
87 5279 = 5279
88 4199 = 13 * 17 * 19
89 6311 = 6311
90 5951 = 11 * 541
91 4679 = 4679
92 4991 = 7 * 23 * 31
93 5351 = 5351
94 7367 = 53 * 139
95 6959 = 6959
96 6071 = 13 * 467
97 5519 = 5519
98 6191 = 41 * 151
99 5591 = 5591
100 7991 = 61 * 131
101 5879 = 5879
102 9383 = 11 * 853
103 13799 = 13799
104 9359 = 7^2 * 191
105 6719 = 6719
106 7631 = 13 * 587
107 8231 = 8231
108 5759 = 13 * 443
109 5711 = 5711
110 7751 = 23 * 337
111 15359 = 15359
For a list of the first time each small class number occurs, see OEIS060649, class numbers up to 50
For a list of the first time each small class number occurs, see [OEIS060649][1], class numbers up to 50
I wrote a little program,
1 3 = 3
2 15 = 3 * 5
3 23 = 23
4 39 = 3 * 13
5 47 = 47
6 87 = 3 * 29
7 71 = 71
8 95 = 5 * 19
9 199 = 199
10 119 = 7 * 17
11 167 = 167
12 231 = 3 * 7 * 11
13 191 = 191
14 215 = 5 * 43
15 239 = 239
16 399 = 3 * 7 * 19
17 383 = 383
18 335 = 5 * 67
19 311 = 311
20 455 = 5 * 7 * 13
21 431 = 431
22 591 = 3 * 197
23 647 = 647
24 695 = 5 * 139
25 479 = 479
26 551 = 19 * 29
27 983 = 983
28 831 = 3 * 277
29 887 = 887
30 671 = 11 * 61
31 719 = 719
32 791 = 7 * 113
33 839 = 839
34 1079 = 13 * 83
35 1031 = 1031
36 959 = 7 * 137
37 1487 = 1487
38 1199 = 11 * 109
39 1439 = 1439
40 1271 = 31 * 41
41 1151 = 1151
42 1959 = 3 * 653
43 1847 = 1847
44 1391 = 13 * 107
45 1319 = 1319
46 2615 = 5 * 523
47 3023 = 3023
48 1751 = 17 * 103
49 1511 = 1511
50 1799 = 7 * 257
51 1559 = 1559
52 1679 = 23 * 73
53 2711 = 2711
54 2759 = 31 * 89
55 4463 = 4463
56 1991 = 11 * 181
57 2591 = 2591
58 2231 = 23 * 97
59 2399 = 2399
60 2159 = 17 * 127
61 3863 = 3863
62 2471 = 7 * 353
63 2351 = 2351
64 2519 = 11 * 229
65 3527 = 3527
66 3431 = 47 * 73
67 3719 = 3719
68 2831 = 19 * 149
69 3119 = 3119
70 3239 = 41 * 79
71 5471 = 5471
72 3311 = 7 * 11 * 43
73 2999 = 2999
74 4151 = 7 * 593
75 4703 = 4703
76 3071 = 37 * 83
77 6263 = 6263
78 5111 = 19 * 269
79 4391 = 4391
80 5183 = 71 * 73
81 3671 = 3671
82 3839 = 11 * 349
83 3911 = 3911
84 4031 = 29 * 139
85 4079 = 4079
86 6767 = 67 * 101
87 5279 = 5279
88 4199 = 13 * 17 * 19
89 6311 = 6311
90 5951 = 11 * 541
91 4679 = 4679
92 4991 = 7 * 23 * 31
93 5351 = 5351
94 7367 = 53 * 139
95 6959 = 6959
96 6071 = 13 * 467
97 5519 = 5519
98 6191 = 41 * 151
99 5591 = 5591
100 7991 = 61 * 131
101 5879 = 5879
102 9383 = 11 * 853
103 13799 = 13799
104 9359 = 7^2 * 191
105 6719 = 6719
106 7631 = 13 * 587
107 8231 = 8231
108 5759 = 13 * 443
109 5711 = 5711
110 7751 = 23 * 337
111 15359 = 15359
112 7895 = 5 * 1579
113 8039 = 8039
114 6431 = 59 * 109
115 7559 = 7559
116 7271 = 11 * 661
117 6551 = 6551
118 8351 = 7 * 1193
119 9791 = 9791
120 7391 = 19 * 389
121 8111 = 8111
122 11735 = 5 * 2347
123 14087 = 14087
124 9119 = 11 * 829
125 11519 = 11519
126 8279 = 17 * 487
127 19463 = 19463
128 10295 = 5 * 29 * 71
129 9551 = 9551
130 8879 = 13 * 683
131 12671 = 12671
132 8711 = 31 * 281
133 9719 = 9719
134 8399 = 37 * 227
135 8951 = 8951
136 9911 = 11 * 17 * 53
137 15287 = 15287
138 9071 = 47 * 193
139 9239 = 9239
140 13319 = 19 * 701
141 11399 = 11399
142 15311 = 61 * 251
143 11471 = 11471
144 11591 = 67 * 173
145 14879 = 14879
146 13199 = 67 * 197
147 13679 = 13679
148 11231 = 11 * 1021
149 17783 = 17783
150 11879 = 7 * 1697
151 22727 = 22727
152 14111 = 103 * 137
153 10391 = 10391
154 12311 = 13 * 947
155 20807 = 20807
156 10919 = 61 * 179
157 25847 = 25847
158 15935 = 5 * 3187
159 12479 = 12479
160 15431 = 13 * 1187
161 12239 = 12239
162 13919 = 31 * 449
163 40039 = 40039
164 14231 = 7 * 19 * 107
165 12911 = 12911
166 26279 = 11 * 2389
167 15671 = 15671
168 18599 = 7 * 2657
169 24551 = 24551
170 23183 = 97 * 239
171 13751 = 13751
172 17135 = 5 * 23 * 149
173 14159 = 14159
174 13439 = 89 * 151
175 18719 = 18719
176 18431 = 7 * 2633
177 22871 = 22871
178 13991 = 17 * 823
179 17519 = 17519
180 15839 = 47 * 337
181 14759 = 14759
182 14999 = 53 * 283
183 16631 = 16631
184 21791 = 7 * 11 * 283
185 14951 = 14951
186 20591 = 59 * 349
187 25583 = 25583
188 20951 = 7 * 41 * 73
189 22511 = 22511
190 16799 = 107 * 157
191 22271 = 22271
192 16511 = 11 * 19 * 79
193 26591 = 26591
194 20279 = 7 * 2897
195 15791 = 15791
196 19151 = 11 * 1741
197 24071 = 24071
198 17951 = 29 * 619
199 19991 = 19991
200 21311 = 101 * 211
201 32423 = 32423
202 17111 = 71 * 241
203 19031 = 19031
204 20039 = 29 * 691
205 18119 = 18119
206 20471 = 11 * 1861
207 34583 = 34583
208 19631 = 67 * 293
209 28151 = 28151
210 28079 = 43 * 653
211 39791 = 39791
212 20159 = 19 * 1061
213 18191 = 18191
214 21551 = 23 * 937
215 24359 = 24359
216 22799 = 7 * 3257
217 22679 = 22679
218 24839 = 59 * 421
219 24671 = 24671
220 26039 = 13 * 2003
221 26711 = 26711
222 22151 = 17 * 1303
223 44111 = 44111
224 25751 = 11 * 2341
225 25031 = 25031
226 25511 = 97 * 263
227 24239 = 24239
228 21479 = 47 * 457
229 23399 = 23399
230 25079 = 31 * 809
231 26759 = 26759
232 26351 = 13 * 2027
233 28871 = 28871
234 23231 = 13 * 1787
235 37991 = 37991
236 27599 = 11 * 13 * 193
237 33071 = 33071
238 28271 = 17 * 1663
239 25679 = 25679
240 26519 = 23 * 1153
241 37511 = 37511
242 23999 = 103 * 233
243 29399 = 29399
244 28391 = 11 * 29 * 89
245 26879 = 26879
246 34991 = 11 * 3181
247 27191 = 27191
248 25871 = 41 * 631
249 27551 = 27551
250 30551 = 137 * 223
251 39119 = 39119
252 27719 = 53 * 523
253 35831 = 35831
254 42335 = 5 * 8467
255 40559 = 40559
256 39431 = 7 * 43 * 131
257 31799 = 31799
258 30791 = 41 * 751
259 27431 = 27431
260 32759 = 17 * 41 * 47
261 38711 = 38711
262 37751 = 7 * 5393
263 36671 = 36671
264 29279 = 19 * 23 * 67
265 48023 = 48023
266 30239 = 11 * 2749
267 44711 = 44711
268 38111 = 23 * 1657
269 34919 = 34919
270 31919 = 59 * 541
271 83903 = 83903
272 30719 = 13 * 17 * 139
273 41999 = 41999
274 32639 = 127 * 257
275 38351 = 38351
276 36839 = 11 * 17 * 197
277 55871 = 55871
278 33431 = 101 * 331
279 33479 = 33479
280 38279 = 101 * 379
281 41039 = 41039
282 32471 = 19 * 1709
283 48311 = 48311
284 38471 = 17 * 31 * 73
285 35591 = 35591
286 42671 = 71 * 601
287 47591 = 47591
288 36431 = 17 * 2143
289 31391 = 31391
290 40799 = 11 * 3709
291 36599 = 36599
292 34151 = 13 * 37 * 71
293 43151 = 43151
294 49079 = 17 * 2887
295 51239 = 51239
296 46079 = 11 * 59 * 71
297 42839 = 42839
298 38951 = 11 * 3541
299 59879 = 59879
300 34271 = 43 * 797
301 43319 = 43319
302 61079 = 103 * 593
303 53279 = 53279
304 39311 = 19 * 2069
305 35279 = 35279
306 50879 = 83 * 613
307 56711 = 56711
308 40871 = 23 * 1777
309 43991 = 43991
310 41159 = 79 * 521
311 40031 = 40031
312 43559 = 43 * 1013
313 58679 = 58679
314 68631 = 3 * 22877
315 44351 = 44351
316 48671 = 7 * 17 * 409
317 42719 = 42719
318 45839 = 23 * 1993
319 62639 = 62639
320 42479 = 107 * 397
321 80687 = 80687
322 51959 = 223 * 233
323 49391 = 49391
324 39959 = 31 * 1289
325 38639 = 38639
326 56831 = 17 * 3343
327 46511 = 46511
328 63071 = 59 * 1069
329 43391 = 43391
330 58319 = 29 * 2011
331 44519 = 44519
332 51119 = 17 * 31 * 97
333 75431 = 75431
334 49271 = 29 * 1699
335 56591 = 56591
336 47879 = 13 * 29 * 127
337 46199 = 46199
338 78359 = 127 * 617
339 52919 = 52919
340 51911 = 23 * 37 * 61
341 67271 = 67271
342 54071 = 139 * 389
343 52631 = 52631
344 47519 = 19 * 41 * 61
345 58511 = 58511
346 56111 = 11 * 5101
347 75767 = 75767
348 52751 = 17 * 29 * 107
349 79967 = 79967
350 47759 = 163 * 293
351 66071 = 66071
352 45239 = 19 * 2381
353 61031 = 61031
354 48551 = 47 * 1033
355 53759 = 53759
356 64391 = 19 * 3389
357 49871 = 49871
358 62879 = 227 * 277
359 50111 = 50111
360 58799 = 13 * 4523
361 50951 = 50951
362 54599 = 71 * 769
363 64319 = 64319
364 60791 = 31 * 37 * 53
365 64151 = 64151
366 64559 = 11 * 5869
367 56999 = 56999
368 65639 = 7 * 9377
369 89231 = 89231
370 71759 = 73 * 983
371 82031 = 82031
372 67199 = 11 * 41 * 149
373 57791 = 57791
374 54911 = 43 * 1277
375 53231 = 53231
376 55319 = 11 * 47 * 107
377 73751 = 73751
378 62999 = 73 * 863
379 59351 = 59351
380 62711 = 11 * 5701
381 57119 = 57119
382 61199 = 19 * 3221
383 105167 = 105167
384 56759 = 211 * 269
385 78311 = 78311
386 69359 = 43 * 1613
387 58439 = 58439
388 73295 = 5 * 107 * 137
389 91079 = 91079
390 69551 = 157 * 443
391 78839 = 78839
392 77159 = 19 * 31 * 131
393 74231 = 74231
394 73799 = 11 * 6709
395 61151 = 61151
396 74711 = 7 * 13 * 821
397 84431 = 84431
398 60359 = 13 * 4643
399 61871 = 61871
400 67031 = 17 * 3943
401 73079 = 73079
402 72791 = 83 * 877
403 71399 = 71399
404 83279 = 7 * 11897
405 64679 = 64679
406 73391 = 79 * 929
407 70199 = 70199
408 71279 = 13 * 5483
409 67679 = 67679
410 85271 = 71 * 1201
411 87671 = 87671
412 73559 = 17 * 4327
413 100559 = 100559
414 73031 = 7 * 10433
415 81119 = 81119
416 71111 = 17 * 47 * 89
417 88799 = 88799
418 90119 = 227 * 397
419 151247 = 151247
420 74399 = 13 * 59 * 97
421 72959 = 72959
422 70391 = 43 * 1637
423 63839 = 63839
424 65159 = 23 * 2833
425 84719 = 84719
426 86831 = 31 * 2801
427 79631 = 79631
428 93959 = 17 * 5527
429 75479 = 75479
430 108479 = 7 * 15497
431 102359 = 102359
432 72071 = 97 * 743
433 96431 = 96431
434 68591 = 113 * 607
435 93911 = 93911
436 73631 = 29 * 2539
437 124823 = 124823
438 76439 = 11 * 6949
439 109391 = 109391
440 71231 = 19 * 23 * 163
441 92951 = 92951
442 92231 = 149 * 619
443 87911 = 87911
444 104279 = 7 * 14897
445 82799 = 82799
446 82199 = 13 * 6323
447 124991 = 124991
448 78119 = 191 * 409
449 128351 = 128351
450 75599 = 17 * 4447
451 141311 = 141311
452 83879 = 37 * 2267
453 83639 = 83639
454 75071 = 41 * 1831
455 80471 = 80471
456 97991 = 29 * 31 * 109
457 90359 = 90359
458 98831 = 23 * 4297
459 92399 = 92399
460 82631 = 19 * 4349
461 138959 = 138959
462 81311 = 17 * 4783
463 90191 = 90191
464 85679 = 11 * 7789
465 117959 = 117959
466 82991 = 37 * 2243
467 125639 = 125639
468 79439 = 19 * 37 * 113
469 87071 = 87071
470 85151 = 11 * 7741
471 107999 = 107999
472 106679 = 107 * 997
473 135599 = 135599
474 85511 = 233 * 367
475 99839 = 99839
476 88871 = 181 * 491
477 110711 = 110711
478 109031 = 13 * 8387
479 115319 = 115319
480 84839 = 43 * 1973
481 153071 = 153071
482 103871 = 241 * 431
483 110879 = 110879
484 91031 = 29 * 43 * 73
485 100799 = 100799
486 91439 = 61 * 1499
487 88079 = 88079
488 114215 = 5 * 53 * 431
489 205391 = 205391
490 120839 = 149 * 811
491 113039 = 113039
492 102959 = 149 * 691
493 140759 = 140759
494 118991 = 257 * 463
495 116471 = 116471
496 100751 = 7 * 37 * 389
497 115631 = 115631
498 113951 = 17 * 6703
499 122471 = 122471
500 96599 = 29 * 3331
501 101111 = 101111
502 103199 = 31 * 3329
503 129671 = 129671
504 101639 = 37 * 41 * 67
505 88919 = 88919
506 105311 = 53 * 1987
507 98999 = 98999
508 98159 = 103 * 953
509 140351 = 140351
510 92039 = 31 * 2969
511 130199 = 130199
512 132599 = 97 * 1367
513 115751 = 115751
514 178727 = 29 * 6163
515 126839 = 126839
516 114071 = 37 * 3083
517 106391 = 106391
518 159815 = 5 * 31963
519 97919 = 97919
520 112439 = 229 * 491
521 189983 = 189983
522 138911 = 31 * 4481
523 149111 = 149111
524 135959 = 79 * 1721
525 117911 = 117911
526 99791 = 73 * 1367
527 109199 = 109199
528 105551 = 59 * 1789
529 148991 = 148991
530 137759 = 347 * 397
531 112559 = 112559
532 108239 = 17 * 6367
533 95471 = 95471
534 102119 = 17 * 6007
535 131759 = 131759
536 123959 = 11 * 59 * 191
537 127679 = 127679
538 144119 = 31 * 4649
539 110039 = 110039
540 107159 = 13 * 8243
541 195887 = 195887
542 130031 = 11 * 11821
543 107351 = 107351
544 110759 = 11 * 10069
545 164999 = 164999
546 119999 = 11 * 10909
547 112031 = 112031
548 140999 = 19 * 41 * 181
549 199679 = 199679
550 127151 = 43 * 2957
551 112199 = 112199
552 128999 = 13 * 9923
553 121631 = 121631
554 247199 = 179 * 1381
555 104711 = 104711
556 111359 = 19 * 5861
557 177791 = 177791
558 175535 = 5 * 35107
559 115079 = 115079
560 127391 = 11 * 37 * 313
561 128831 = 128831
562 114791 = 191 * 601
563 121439 = 121439
564 121679 = 271 * 449
565 152879 = 152879
566 113879 = 263 * 433
567 138599 = 138599
568 130751 = 53 * 2467
569 216119 = 216119
570 147479 = 139 * 1061
571 144479 = 144479
572 129359 = 277 * 467
573 119759 = 119759
574 125831 = 29 * 4339
575 136751 = 136751
576 132431 = 13 * 61 * 167
577 123191 = 123191
578 126671 = 197 * 643
579 137639 = 137639
580 130919 = 89 * 1471
581 141671 = 141671
582 130511 = 19 * 6869
583 164471 = 164471
584 171839 = 227 * 757
585 135119 = 135119
586 158399 = 151 * 1049
587 232847 = 232847
588 134111 = 41 * 3271
589 119591 = 119591
590 140279 = 151 * 929
591 133559 = 133559
592 182591 = 157 * 1163
593 153191 = 153191
594 134879 = 29 * 4651
595 154439 = 154439
596 148799 = 7 * 29 * 733
597 149159 = 149159
598 176615 = 5 * 35323
599 138239 = 138239
600 148511 = 11 * 23 * 587
601 179591 = 179591
602 136919 = 23 * 5953
603 167471 = 167471
604 171311 = 7 * 24473
605 139079 = 139079
606 118271 = 101 * 1171
607 143519 = 143519
608 150839 = 13 * 41 * 283
609 128519 = 128519
610 142679 = 61 * 2339
611 142799 = 142799
612 139919 = 13 * 47 * 229
613 152039 = 152039
614 195551 = 17 * 11503
615 156719 = 156719
616 155039 = 197 * 787
617 161831 = 161831
618 152759 = 173 * 883
619 247607 = 247607
620 129191 = 23 * 41 * 137
621 188159 = 188159
622 190559 = 29 * 6571
623 186119 = 186119
624 151511 = 127 * 1193
625 234599 = 234599
626 156911 = 173 * 907
627 160079 = 160079
628 194255 = 5 * 38851
629 291287 = 291287
630 157031 = 7 * 22433
631 147551 = 147551
632 170519 = 41 * 4159
633 159431 = 159431
634 140591 = 11 * 12781
635 224351 = 224351
636 156239 = 23 * 6793
637 149519 = 149519
638 186359 = 157 * 1187
639 142271 = 142271
640 176231 = 11 * 37 * 433
641 201599 = 201599
642 168791 = 7 * 24113
643 177239 = 177239
644 175559 = 17 * 23 * 449
645 149399 = 149399
646 176039 = 401 * 439
647 165479 = 165479
648 183431 = 59 * 3109
649 162791 = 162791
650 227015 = 5 * 45403
651 145991 = 145991
652 165359 = 17 * 71 * 137
653 223319 = 223319
654 212231 = 83 * 2557
655 155399 = 155399
656 165959 = 67 * 2477
657 181919 = 181919
658 177119 = 37 * 4787
659 163679 = 163679
660 177551 = 11 * 16141
661 196439 = 196439
662 176879 = 73 * 2423
663 184631 = 184631
664 194711 = 11 * 31 * 571
665 189671 = 189671
666 154271 = 13 * 11867
667 147671 = 147671
668 160991 = 199 * 809
669 158759 = 158759
670 153599 = 269 * 571
671 185951 = 185951
672 152591 = 331 * 461
673 162839 = 162839
674 175271 = 53 * 3307
675 269879 = 269879
676 174191 = 373 * 467
677 601247 = 601247
678 177719 = 43 * 4133
679 276191 = 276191
680 181991 = 127 * 1433
681 269231 = 269231
682 185111 = 37 * 5003
683 188711 = 188711
684 171239 = 109 * 1571
685 227519 = 227519
686 187799 = 17 * 11047
687 224591 = 224591
688 214079 = 97 * 2207
689 206639 = 206639
690 184799 = 283 * 653
691 278087 = 278087
692 194879 = 23 * 37 * 229
693 169991 = 169991
694 198071 = 41 * 4831
695 184271 = 184271
696 184679 = 11 * 103 * 163
697 167879 = 167879
698 213839 = 43 * 4973
699 166319 = 166319
700 185471 = 11 * 13 * 1297
701 187871 = 187871
702 238271 = 11 * 21661
703 182159 = 182159
704 198239 = 137 * 1447
705 204599 = 204599
706 217031 = 31 * 7001
707 195599 = 195599
708 167639 = 53 * 3163
709 240959 = 240959
710 174719 = 379 * 461
711 183959 = 183959
712 209831 = 17 * 12343
713 174599 = 174599
714 204671 = 59 * 3469
715 218111 = 218111
716 171071 = 17 * 29 * 347
717 219911 = 219911
718 195719 = 19 * 10301
719 231839 = 231839
720 196031 = 11 * 71 * 251
721 220391 = 220391
722 254399 = 67 * 3797
723 180311 = 180311
724 203111 = 101 * 2011
725 226799 = 226799
726 175031 = 383 * 457
727 263951 = 263951
728 204239 = 7 * 163 * 179
729 178559 = 178559
730 194039 = 29 * 6691
731 374783 = 374783
732 202319 = 13 * 79 * 197
733 317279 = 317279
734 209711 = 43 * 4877
735 241511 = 241511
736 237551 = 139 * 1709
737 232391 = 232391
738 247511 = 11 * 22501
739 360959 = 360959
740 222719 = 7 * 31817
741 213359 = 213359
742 230831 = 19 * 12149
743 207191 = 207191
744 202991 = 41 * 4951
745 227471 = 227471
746 240191 = 7 * 34313
747 193751 = 193751
748 188471 = 29 * 67 * 97
749 264359 = 264359
750 218951 = 373 * 587
751 207479 = 207479
752 218231 = 13 * 16787
753 263111 = 263111
754 190319 = 83 * 2293
755 250871 = 250871
756 185279 = 41 * 4519
757 219119 = 219119
758 231791 = 7 * 33113
759 202751 = 202751
760 205271 = 11 * 18661
761 191231 = 191231
762 191351 = 179 * 1069
763 287279 = 287279
764 210311 = 19 * 11069
765 243239 = 243239
766 234911 = 61 * 3851
767 218279 = 218279
768 228791 = 109 * 2099
769 257591 = 257591
770 251039 = 17 * 14767
771 226511 = 226511
772 238391 = 17 * 37 * 379
773 235751 = 235751
774 224279 = 11 * 20389
775 265079 = 265079
776 222239 = 31 * 67 * 107
777 199559 = 199559
778 249959 = 43 * 5813
779 298031 = 298031
780 205631 = 61 * 3371
781 257711 = 257711
782 256511 = 199 * 1289
783 320591 = 320591
784 221231 = 197 * 1123
785 248351 = 248351
786 245159 = 61 * 4019
787 280199 = 280199
788 248519 = 257 * 967
789 223439 = 223439
790 234071 = 23 * 10177
791 276839 = 276839
792 225599 = 11 * 20509
793 260399 = 260399
794 302231 = 173 * 1747
795 235199 = 235199
796 224111 = 17 * 13183
797 211559 = 211559
798 298751 = 179 * 1669
799 231479 = 231479
800 233999 = 211 * 1109
801 284831 = 284831
802 346031 = 7 * 49433
803 298679 = 298679
804 212159 = 53 * 4003
805 217439 = 217439
806 264911 = 17 * 15583
807 249311 = 249311
808 201431 = 157 * 1283
809 238031 = 238031
810 232151 = 83 * 2797
811 228359 = 228359
812 267119 = 29 * 61 * 151
813 388319 = 388319
814 238871 = 53 * 4507
815 279551 = 279551
816 236759 = 17 * 19 * 733
817 467399 = 467399
818 230711 = 13 * 17747
819 257351 = 257351
820 242759 = 11 * 29 * 761
821 225671 = 225671
822 271319 = 181 * 1499
823 382919 = 382919
824 230879 = 11 * 139 * 151
825 316391 = 316391
826 273479 = 17 * 16087
827 251159 = 251159
828 238559 = 191 * 1249
829 289439 = 289439
830 266591 = 13 * 20507
831 236519 = 236519
832 239951 = 19 * 73 * 173
833 282959 = 282959
834 300551 = 37 * 8123
835 334991 = 334991
836 274559 = 463 * 593
837 255239 = 255239
838 274511 = 211 * 1301
839 336599 = 336599
840 246791 = 19 * 31 * 419
841 253679 = 253679
842 239399 = 41 * 5839
843 262391 = 262391
844 262631 = 181 * 1451
845 335999 = 335999
846 290111 = 19 * 15269
847 269519 = 269519
848 344351 = 7 * 49193
849 479879 = 479879
850 266279 = 13 * 20483
851 267959 = 267959
852 310631 = 19 * 16349
853 273719 = 273719
854 256871 = 61 * 4211
855 285071 = 285071
856 254999 = 19 * 13421
857 551951 = 551951
858 246671 = 97 * 2543
859 454991 = 454991
860 293471 = 17 * 61 * 283
861 302111 = 302111
862 345959 = 347 * 997
863 255191 = 255191
864 257039 = 37 * 6947
865 306479 = 306479
866 386759 = 439 * 881
867 354791 = 354791
868 288791 = 487 * 593
869 261791 = 261791
870 277079 = 11 * 25189
871 306239 = 306239
872 314639 = 13 * 24203
873 265151 = 265151
874 313799 = 311 * 1009
875 250799 = 250799
876 338519 = 503 * 673
877 297359 = 297359
878 319751 = 19 * 16829
879 378671 = 378671
880 239279 = 29 * 37 * 223
881 291191 = 291191
882 286919 = 19 * 15101
883 267671 = 267671
884 325415 = 5 * 37 * 1759
885 305231 = 305231
886 281111 = 109 * 2579
887 580031 = 580031
888 270479 = 11 * 67 * 367
889 440711 = 440711
890 264239 = 139 * 1901
891 327479 = 327479
892 250631 = 17 * 23 * 641
893 395111 = 395111
894 259871 = 151 * 1721
895 368471 = 368471
896 286079 = 43 * 6653
897 391151 = 391151
898 329159 = 101 * 3259
899 361919 = 361919
900 299519 = 11 * 73 * 373
901 417191 = 417191
902 320711 = 29 * 11059
903 300431 = 300431
904 324191 = 7 * 29 * 1597
905 322871 = 322871
906 396791 = 463 * 857
907 415631 = 415631
908 373295 = 5 * 13 * 5743
909 363719 = 363719
910 308831 = 53 * 5827
911 290351 = 290351
912 296999 = 23 * 37 * 349
913 357671 = 357671
914 390719 = 7 * 55817
915 342599 = 342599
916 280271 = 31 * 9041
917 307919 = 307919
918 277031 = 53 * 5227
919 303551 = 303551
920 304079 = 17 * 31 * 577
921 340919 = 340919
922 348071 = 107 * 3253
923 450479 = 450479
924 311519 = 13 * 31 * 773
925 314159 = 314159
926 349151 = 11 * 31741
927 364031 = 364031
928 360191 = 13 * 103 * 269
929 283799 = 283799
930 277679 = 23 * 12073
931 475271 = 475271
932 316151 = 11 * 41 * 701
933 317831 = 317831
934 349751 = 367 * 953
935 336551 = 336551
936 305399 = 29 * 10531
937 366239 = 366239
938 362039 = 277 * 1307
939 293999 = 293999
940 311351 = 23 * 13537
941 302279 = 302279
942 381671 = 59 * 6469
943 284231 = 284231
944 350831 = 13 * 26987
945 350159 = 350159
946 292991 = 67 * 4373
947 291359 = 291359
948 373511 = 311 * 1201
949 345791 = 345791
950 351911 = 7 * 50273
951 325079 = 325079
952 376031 = 37 * 10163
953 437111 = 437111
954 352439 = 31 * 11369
955 379679 = 379679
956 364199 = 11 * 113 * 293
957 413951 = 413951
958 426719 = 23 * 18553
959 405719 = 405719
960 338351 = 13 * 17 * 1531
961 383759 = 383759
962 373799 = 43 * 8693
963 289511 = 289511
964 313871 = 17 * 37 * 499
965 325751 = 325751
966 355631 = 349 * 1019
967 600959 = 600959
968 332111 = 13 * 59 * 433
969 382751 = 382751
970 336839 = 167 * 2017
971 494591 = 494591
972 351119 = 311 * 1129
973 348911 = 348911
974 301391 = 41 * 7351
975 376631 = 376631
976 341519 = 523 * 653
977 389399 = 389399
978 353279 = 149 * 2371
979 353471 = 353471
980 348311 = 79 * 4409
981 341879 = 341879
982 452399 = 37 * 12227
983 381911 = 381911
984 355319 = 19 * 18701
985 369071 = 369071
986 313199 = 41 * 7639
987 452759 = 452759
988 408239 = 13 * 31 * 1013
989 322559 = 322559
990 396431 = 7 * 56633
991 327071 = 327071
992 307271 = 109 * 2819
993 454079 = 454079
994 323111 = 103 * 3137
995 330431 = 330431
996 3
For a list of the first time each small class number occurs, see OEIS060649, class numbers up to 50
For a list of the first time each small class number occurs, see [OEIS060649][1], class numbers up to 50
I wrote a little program,
1 3 = 3
2 15 = 3 * 5
3 23 = 23
4 39 = 3 * 13
5 47 = 47
6 87 = 3 * 29
7 71 = 71
8 95 = 5 * 19
9 199 = 199
10 119 = 7 * 17
11 167 = 167
12 231 = 3 * 7 * 11
13 191 = 191
14 215 = 5 * 43
15 239 = 239
16 399 = 3 * 7 * 19
17 383 = 383
18 335 = 5 * 67
19 311 = 311
20 455 = 5 * 7 * 13
21 431 = 431
22 591 = 3 * 197
23 647 = 647
24 695 = 5 * 139
25 479 = 479
26 551 = 19 * 29
27 983 = 983
28 831 = 3 * 277
29 887 = 887
30 671 = 11 * 61
31 719 = 719
32 791 = 7 * 113
33 839 = 839
34 1079 = 13 * 83
35 1031 = 1031
36 959 = 7 * 137
37 1487 = 1487
38 1199 = 11 * 109
39 1439 = 1439
40 1271 = 31 * 41
41 1151 = 1151
42 1959 = 3 * 653
43 1847 = 1847
44 1391 = 13 * 107
45 1319 = 1319
46 2615 = 5 * 523
47 3023 = 3023
48 1751 = 17 * 103
49 1511 = 1511
50 1799 = 7 * 257
51 1559 = 1559
52 1679 = 23 * 73
53 2711 = 2711
54 2759 = 31 * 89
55 4463 = 4463
56 1991 = 11 * 181
57 2591 = 2591
58 2231 = 23 * 97
59 2399 = 2399
60 2159 = 17 * 127
61 3863 = 3863
62 2471 = 7 * 353
63 2351 = 2351
64 2519 = 11 * 229
65 3527 = 3527
66 3431 = 47 * 73
67 3719 = 3719
68 2831 = 19 * 149
69 3119 = 3119
70 3239 = 41 * 79
71 5471 = 5471
72 3311 = 7 * 11 * 43
73 2999 = 2999
74 4151 = 7 * 593
75 4703 = 4703
76 3071 = 37 * 83
77 6263 = 6263
78 5111 = 19 * 269
79 4391 = 4391
80 5183 = 71 * 73
81 3671 = 3671
82 3839 = 11 * 349
83 3911 = 3911
84 4031 = 29 * 139
85 4079 = 4079
86 6767 = 67 * 101
87 5279 = 5279
88 4199 = 13 * 17 * 19
89 6311 = 6311
90 5951 = 11 * 541
91 4679 = 4679
92 4991 = 7 * 23 * 31
93 5351 = 5351
94 7367 = 53 * 139
95 6959 = 6959
96 6071 = 13 * 467
97 5519 = 5519
98 6191 = 41 * 151
99 5591 = 5591
100 7991 = 61 * 131
101 5879 = 5879
102 9383 = 11 * 853
103 13799 = 13799
104 9359 = 7^2 * 191
105 6719 = 6719
106 7631 = 13 * 587
107 8231 = 8231
108 5759 = 13 * 443
109 5711 = 5711
110 7751 = 23 * 337
111 15359 = 15359
112 7895 = 5 * 1579
113 8039 = 8039
114 6431 = 59 * 109
115 7559 = 7559
116 7271 = 11 * 661
117 6551 = 6551
118 8351 = 7 * 1193
119 9791 = 9791
120 7391 = 19 * 389
121 8111 = 8111
122 11735 = 5 * 2347
123 14087 = 14087
124 9119 = 11 * 829
125 11519 = 11519
126 8279 = 17 * 487
127 19463 = 19463
128 10295 = 5 * 29 * 71
129 9551 = 9551
130 8879 = 13 * 683
131 12671 = 12671
132 8711 = 31 * 281
133 9719 = 9719
134 8399 = 37 * 227
135 8951 = 8951
136 9911 = 11 * 17 * 53
137 15287 = 15287
138 9071 = 47 * 193
139 9239 = 9239
140 13319 = 19 * 701
141 11399 = 11399
142 15311 = 61 * 251
143 11471 = 11471
144 11591 = 67 * 173
145 14879 = 14879
146 13199 = 67 * 197
147 13679 = 13679
148 11231 = 11 * 1021
149 17783 = 17783
150 11879 = 7 * 1697
151 22727 = 22727
152 14111 = 103 * 137
153 10391 = 10391
154 12311 = 13 * 947
155 20807 = 20807
156 10919 = 61 * 179
157 25847 = 25847
158 15935 = 5 * 3187
159 12479 = 12479
160 15431 = 13 * 1187
161 12239 = 12239
162 13919 = 31 * 449
163 40039 = 40039
164 14231 = 7 * 19 * 107
165 12911 = 12911
166 26279 = 11 * 2389
167 15671 = 15671
168 18599 = 7 * 2657
169 24551 = 24551
170 23183 = 97 * 239
171 13751 = 13751
172 17135 = 5 * 23 * 149
173 14159 = 14159
174 13439 = 89 * 151
175 18719 = 18719
176 18431 = 7 * 2633
177 22871 = 22871
178 13991 = 17 * 823
179 17519 = 17519
180 15839 = 47 * 337
181 14759 = 14759
182 14999 = 53 * 283
183 16631 = 16631
184 21791 = 7 * 11 * 283
185 14951 = 14951
186 20591 = 59 * 349
187 25583 = 25583
188 20951 = 7 * 41 * 73
189 22511 = 22511
190 16799 = 107 * 157
191 22271 = 22271
192 16511 = 11 * 19 * 79
193 26591 = 26591
194 20279 = 7 * 2897
195 15791 = 15791
196 19151 = 11 * 1741
197 24071 = 24071
198 17951 = 29 * 619
199 19991 = 19991
200 21311 = 101 * 211
201 32423 = 32423
202 17111 = 71 * 241
203 19031 = 19031
204 20039 = 29 * 691
205 18119 = 18119
206 20471 = 11 * 1861
207 34583 = 34583
208 19631 = 67 * 293
209 28151 = 28151
210 28079 = 43 * 653
211 39791 = 39791
212 20159 = 19 * 1061
213 18191 = 18191
214 21551 = 23 * 937
215 24359 = 24359
216 22799 = 7 * 3257
217 22679 = 22679
218 24839 = 59 * 421
219 24671 = 24671
220 26039 = 13 * 2003
221 26711 = 26711
222 22151 = 17 * 1303
223 44111 = 44111
224 25751 = 11 * 2341
225 25031 = 25031
226 25511 = 97 * 263
227 24239 = 24239
228 21479 = 47 * 457
229 23399 = 23399
230 25079 = 31 * 809
231 26759 = 26759
232 26351 = 13 * 2027
233 28871 = 28871
234 23231 = 13 * 1787
235 37991 = 37991
236 27599 = 11 * 13 * 193
237 33071 = 33071
238 28271 = 17 * 1663
239 25679 = 25679
240 26519 = 23 * 1153
241 37511 = 37511
242 23999 = 103 * 233
243 29399 = 29399
244 28391 = 11 * 29 * 89
245 26879 = 26879
246 34991 = 11 * 3181
247 27191 = 27191
248 25871 = 41 * 631
249 27551 = 27551
250 30551 = 137 * 223
251 39119 = 39119
252 27719 = 53 * 523
253 35831 = 35831
254 42335 = 5 * 8467
255 40559 = 40559
256 39431 = 7 * 43 * 131
257 31799 = 31799
258 30791 = 41 * 751
259 27431 = 27431
260 32759 = 17 * 41 * 47
261 38711 = 38711
262 37751 = 7 * 5393
263 36671 = 36671
264 29279 = 19 * 23 * 67
265 48023 = 48023
266 30239 = 11 * 2749
267 44711 = 44711
268 38111 = 23 * 1657
269 34919 = 34919
270 31919 = 59 * 541
271 83903 = 83903
272 30719 = 13 * 17 * 139
273 41999 = 41999
274 32639 = 127 * 257
275 38351 = 38351
276 36839 = 11 * 17 * 197
277 55871 = 55871
278 33431 = 101 * 331
279 33479 = 33479
280 38279 = 101 * 379
281 41039 = 41039
282 32471 = 19 * 1709
283 48311 = 48311
284 38471 = 17 * 31 * 73
285 35591 = 35591
286 42671 = 71 * 601
287 47591 = 47591
288 36431 = 17 * 2143
289 31391 = 31391
290 40799 = 11 * 3709
291 36599 = 36599
292 34151 = 13 * 37 * 71
293 43151 = 43151
294 49079 = 17 * 2887
295 51239 = 51239
296 46079 = 11 * 59 * 71
297 42839 = 42839
298 38951 = 11 * 3541
299 59879 = 59879
300 34271 = 43 * 797
301 43319 = 43319
302 61079 = 103 * 593
303 53279 = 53279
304 39311 = 19 * 2069
305 35279 = 35279
306 50879 = 83 * 613
307 56711 = 56711
308 40871 = 23 * 1777
309 43991 = 43991
310 41159 = 79 * 521
311 40031 = 40031
312 43559 = 43 * 1013
313 58679 = 58679
314 68631 = 3 * 22877
315 44351 = 44351
316 48671 = 7 * 17 * 409
317 42719 = 42719
318 45839 = 23 * 1993
319 62639 = 62639
320 42479 = 107 * 397
321 80687 = 80687
322 51959 = 223 * 233
323 49391 = 49391
324 39959 = 31 * 1289
325 38639 = 38639
326 56831 = 17 * 3343
327 46511 = 46511
328 63071 = 59 * 1069
329 43391 = 43391
330 58319 = 29 * 2011
331 44519 = 44519
332 51119 = 17 * 31 * 97
333 75431 = 75431
334 49271 = 29 * 1699
335 56591 = 56591
336 47879 = 13 * 29 * 127
337 46199 = 46199
338 78359 = 127 * 617
339 52919 = 52919
340 51911 = 23 * 37 * 61
341 67271 = 67271
342 54071 = 139 * 389
343 52631 = 52631
344 47519 = 19 * 41 * 61
345 58511 = 58511
346 56111 = 11 * 5101
347 75767 = 75767
348 52751 = 17 * 29 * 107
349 79967 = 79967
350 47759 = 163 * 293
351 66071 = 66071
352 45239 = 19 * 2381
353 61031 = 61031
354 48551 = 47 * 1033
355 53759 = 53759
356 64391 = 19 * 3389
357 49871 = 49871
358 62879 = 227 * 277
359 50111 = 50111
360 58799 = 13 * 4523
361 50951 = 50951
362 54599 = 71 * 769
363 64319 = 64319
364 60791 = 31 * 37 * 53
365 64151 = 64151
366 64559 = 11 * 5869
367 56999 = 56999
368 65639 = 7 * 9377
369 89231 = 89231
370 71759 = 73 * 983
371 82031 = 82031
372 67199 = 11 * 41 * 149
373 57791 = 57791
374 54911 = 43 * 1277
375 53231 = 53231
376 55319 = 11 * 47 * 107
377 73751 = 73751
378 62999 = 73 * 863
379 59351 = 59351
380 62711 = 11 * 5701
381 57119 = 57119
382 61199 = 19 * 3221
383 105167 = 105167
384 56759 = 211 * 269
385 78311 = 78311
386 69359 = 43 * 1613
387 58439 = 58439
388 73295 = 5 * 107 * 137
389 91079 = 91079
390 69551 = 157 * 443
391 78839 = 78839
392 77159 = 19 * 31 * 131
393 74231 = 74231
394 73799 = 11 * 6709
395 61151 = 61151
396 74711 = 7 * 13 * 821
397 84431 = 84431
398 60359 = 13 * 4643
399 61871 = 61871
400 67031 = 17 * 3943
401 73079 = 73079
402 72791 = 83 * 877
403 71399 = 71399
404 83279 = 7 * 11897
405 64679 = 64679
406 73391 = 79 * 929
407 70199 = 70199
408 71279 = 13 * 5483
409 67679 = 67679
410 85271 = 71 * 1201
411 87671 = 87671
412 73559 = 17 * 4327
413 100559 = 100559
414 73031 = 7 * 10433
415 81119 = 81119
416 71111 = 17 * 47 * 89
417 88799 = 88799
418 90119 = 227 * 397
419 151247 = 151247
420 74399 = 13 * 59 * 97
421 72959 = 72959
422 70391 = 43 * 1637
423 63839 = 63839
424 65159 = 23 * 2833
425 84719 = 84719
426 86831 = 31 * 2801
427 79631 = 79631
428 93959 = 17 * 5527
429 75479 = 75479
430 108479 = 7 * 15497
431 102359 = 102359
432 72071 = 97 * 743
433 96431 = 96431
434 68591 = 113 * 607
435 93911 = 93911
436 73631 = 29 * 2539
437 124823 = 124823
438 76439 = 11 * 6949
439 109391 = 109391
440 71231 = 19 * 23 * 163
441 92951 = 92951
442 92231 = 149 * 619
443 87911 = 87911
444 104279 = 7 * 14897
445 82799 = 82799
446 82199 = 13 * 6323
447 124991 = 124991
448 78119 = 191 * 409
449 128351 = 128351
450 75599 = 17 * 4447
451 141311 = 141311
452 83879 = 37 * 2267
453 83639 = 83639
454 75071 = 41 * 1831
455 80471 = 80471
456 97991 = 29 * 31 * 109
457 90359 = 90359
458 98831 = 23 * 4297
459 92399 = 92399
460 82631 = 19 * 4349
461 138959 = 138959
462 81311 = 17 * 4783
463 90191 = 90191
464 85679 = 11 * 7789
465 117959 = 117959
466 82991 = 37 * 2243
467 125639 = 125639
468 79439 = 19 * 37 * 113
469 87071 = 87071
470 85151 = 11 * 7741
471 107999 = 107999
472 106679 = 107 * 997
473 135599 = 135599
474 85511 = 233 * 367
475 99839 = 99839
476 88871 = 181 * 491
477 110711 = 110711
478 109031 = 13 * 8387
479 115319 = 115319
480 84839 = 43 * 1973
481 153071 = 153071
482 103871 = 241 * 431
483 110879 = 110879
484 91031 = 29 * 43 * 73
485 100799 = 100799
486 91439 = 61 * 1499
487 88079 = 88079
488 114215 = 5 * 53 * 431
489 205391 = 205391
490 120839 = 149 * 811
491 113039 = 113039
492 102959 = 149 * 691
493 140759 = 140759
494 118991 = 257 * 463
495 116471 = 116471
496 100751 = 7 * 37 * 389
497 115631 = 115631
498 113951 = 17 * 6703
499 122471 = 122471
500 96599 = 29 * 3331
501 101111 = 101111
502 103199 = 31 * 3329
503 129671 = 129671
504 101639 = 37 * 41 * 67
505 88919 = 88919
506 105311 = 53 * 1987
507 98999 = 98999
508 98159 = 103 * 953
509 140351 = 140351
510 92039 = 31 * 2969
511 130199 = 130199
512 132599 = 97 * 1367
513 115751 = 115751
514 178727 = 29 * 6163
515 126839 = 126839
516 114071 = 37 * 3083
517 106391 = 106391
518 159815 = 5 * 31963
519 97919 = 97919
520 112439 = 229 * 491
521 189983 = 189983
522 138911 = 31 * 4481
523 149111 = 149111
524 135959 = 79 * 1721
525 117911 = 117911
526 99791 = 73 * 1367
527 109199 = 109199
528 105551 = 59 * 1789
529 148991 = 148991
530 137759 = 347 * 397
531 112559 = 112559
532 108239 = 17 * 6367
533 95471 = 95471
534 102119 = 17 * 6007
535 131759 = 131759
536 123959 = 11 * 59 * 191
537 127679 = 127679
538 144119 = 31 * 4649
539 110039 = 110039
540 107159 = 13 * 8243
541 195887 = 195887
542 130031 = 11 * 11821
543 107351 = 107351
544 110759 = 11 * 10069
545 164999 = 164999
546 119999 = 11 * 10909
547 112031 = 112031
548 140999 = 19 * 41 * 181
549 199679 = 199679
550 127151 = 43 * 2957
551 112199 = 112199
552 128999 = 13 * 9923
553 121631 = 121631
554 247199 = 179 * 1381
555 104711 = 104711
556 111359 = 19 * 5861
557 177791 = 177791
558 175535 = 5 * 35107
559 115079 = 115079
560 127391 = 11 * 37 * 313
561 128831 = 128831
562 114791 = 191 * 601
563 121439 = 121439
564 121679 = 271 * 449
565 152879 = 152879
566 113879 = 263 * 433
567 138599 = 138599
568 130751 = 53 * 2467
569 216119 = 216119
570 147479 = 139 * 1061
571 144479 = 144479
572 129359 = 277 * 467
573 119759 = 119759
574 125831 = 29 * 4339
575 136751 = 136751
576 132431 = 13 * 61 * 167
577 123191 = 123191
578 126671 = 197 * 643
579 137639 = 137639
580 130919 = 89 * 1471
581 141671 = 141671
582 130511 = 19 * 6869
583 164471 = 164471
584 171839 = 227 * 757
585 135119 = 135119
586 158399 = 151 * 1049
587 232847 = 232847
588 134111 = 41 * 3271
589 119591 = 119591
590 140279 = 151 * 929
591 133559 = 133559
592 182591 = 157 * 1163
593 153191 = 153191
594 134879 = 29 * 4651
595 154439 = 154439
596 148799 = 7 * 29 * 733
597 149159 = 149159
598 176615 = 5 * 35323
599 138239 = 138239
600 148511 = 11 * 23 * 587
601 179591 = 179591
602 136919 = 23 * 5953
603 167471 = 167471
604 171311 = 7 * 24473
605 139079 = 139079
606 118271 = 101 * 1171
607 143519 = 143519
608 150839 = 13 * 41 * 283
609 128519 = 128519
610 142679 = 61 * 2339
611 142799 = 142799
612 139919 = 13 * 47 * 229
613 152039 = 152039
614 195551 = 17 * 11503
615 156719 = 156719
616 155039 = 197 * 787
617 161831 = 161831
618 152759 = 173 * 883
619 247607 = 247607
620 129191 = 23 * 41 * 137
621 188159 = 188159
622 190559 = 29 * 6571
623 186119 = 186119
624 151511 = 127 * 1193
625 234599 = 234599
626 156911 = 173 * 907
627 160079 = 160079
628 194255 = 5 * 38851
629 291287 = 291287
630 157031 = 7 * 22433
631 147551 = 147551
632 170519 = 41 * 4159
633 159431 = 159431
634 140591 = 11 * 12781
635 224351 = 224351
636 156239 = 23 * 6793
637 149519 = 149519
638 186359 = 157 * 1187
639 142271 = 142271
640 176231 = 11 * 37 * 433
641 201599 = 201599
642 168791 = 7 * 24113
643 177239 = 177239
644 175559 = 17 * 23 * 449
645 149399 = 149399
646 176039 = 401 * 439
647 165479 = 165479
648 183431 = 59 * 3109
649 162791 = 162791
650 227015 = 5 * 45403
651 145991 = 145991
652 165359 = 17 * 71 * 137
653 223319 = 223319
654 212231 = 83 * 2557
655 155399 = 155399
656 165959 = 67 * 2477
657 181919 = 181919
658 177119 = 37 * 4787
659 163679 = 163679
660 177551 = 11 * 16141
661 196439 = 196439
662 176879 = 73 * 2423
663 184631 = 184631
664 194711 = 11 * 31 * 571
665 189671 = 189671
666 154271 = 13 * 11867
667 147671 = 147671
668 160991 = 199 * 809
669 158759 = 158759
670 153599 = 269 * 571
671 185951 = 185951
672 152591 = 331 * 461
673 162839 = 162839
674 175271 = 53 * 3307
675 269879 = 269879
676 174191 = 373 * 467
677 601247 = 601247
678 177719 = 43 * 4133
679 276191 = 276191
680 181991 = 127 * 1433
681 269231 = 269231
682 185111 = 37 * 5003
683 188711 = 188711
684 171239 = 109 * 1571
685 227519 = 227519
686 187799 = 17 * 11047
687 224591 = 224591
688 214079 = 97 * 2207
689 206639 = 206639
690 184799 = 283 * 653
691 278087 = 278087
692 194879 = 23 * 37 * 229
693 169991 = 169991
694 198071 = 41 * 4831
695 184271 = 184271
696 184679 = 11 * 103 * 163
697 167879 = 167879
698 213839 = 43 * 4973
699 166319 = 166319
700 185471 = 11 * 13 * 1297
701 187871 = 187871
702 238271 = 11 * 21661
703 182159 = 182159
704 198239 = 137 * 1447
705 204599 = 204599
706 217031 = 31 * 7001
707 195599 = 195599
708 167639 = 53 * 3163
709 240959 = 240959
710 174719 = 379 * 461
711 183959 = 183959
712 209831 = 17 * 12343
713 174599 = 174599
714 204671 = 59 * 3469
715 218111 = 218111
716 171071 = 17 * 29 * 347
717 219911 = 219911
718 195719 = 19 * 10301
719 231839 = 231839
720 196031 = 11 * 71 * 251
721 220391 = 220391
722 254399 = 67 * 3797
723 180311 = 180311
724 203111 = 101 * 2011
725 226799 = 226799
726 175031 = 383 * 457
727 263951 = 263951
728 204239 = 7 * 163 * 179
729 178559 = 178559
730 194039 = 29 * 6691
731 374783 = 374783
732 202319 = 13 * 79 * 197
733 317279 = 317279
734 209711 = 43 * 4877
735 241511 = 241511
736 237551 = 139 * 1709
737 232391 = 232391
738 247511 = 11 * 22501
739 360959 = 360959
740 222719 = 7 * 31817
741 213359 = 213359
742 230831 = 19 * 12149
743 207191 = 207191
744 202991 = 41 * 4951
745 227471 = 227471
746 240191 = 7 * 34313
747 193751 = 193751
748 188471 = 29 * 67 * 97
749 264359 = 264359
750 218951 = 373 * 587
751 207479 = 207479
752 218231 = 13 * 16787
753 263111 = 263111
754 190319 = 83 * 2293
755 250871 = 250871
756 185279 = 41 * 4519
757 219119 = 219119
758 231791 = 7 * 33113
759 202751 = 202751
760 205271 = 11 * 18661
761 191231 = 191231
762 191351 = 179 * 1069
763 287279 = 287279
764 210311 = 19 * 11069
765 243239 = 243239
766 234911 = 61 * 3851
767 218279 = 218279
768 228791 = 109 * 2099
769 257591 = 257591
770 251039 = 17 * 14767
771 226511 = 226511
772 238391 = 17 * 37 * 379
773 235751 = 235751
774 224279 = 11 * 20389
775 265079 = 265079
776 222239 = 31 * 67 * 107
777 199559 = 199559
778 249959 = 43 * 5813
779 298031 = 298031
780 205631 = 61 * 3371
781 257711 = 257711
782 256511 = 199 * 1289
783 320591 = 320591
784 221231 = 197 * 1123
785 248351 = 248351
786 245159 = 61 * 4019
787 280199 = 280199
788 248519 = 257 * 967
789 223439 = 223439
790 234071 = 23 * 10177
791 276839 = 276839
792 225599 = 11 * 20509
793 260399 = 260399
794 302231 = 173 * 1747
795 235199 = 235199
796 224111 = 17 * 13183
797 211559 = 211559
798 298751 = 179 * 1669
799 231479 = 231479
800 233999 = 211 * 1109
801 284831 = 284831
802 346031 = 7 * 49433
803 298679 = 298679
804 212159 = 53 * 4003
805 217439 = 217439
806 264911 = 17 * 15583
807 249311 = 249311
808 201431 = 157 * 1283
809 238031 = 238031
810 232151 = 83 * 2797
811 228359 = 228359
812 267119 = 29 * 61 * 151
813 388319 = 388319
814 238871 = 53 * 4507
815 279551 = 279551
816 236759 = 17 * 19 * 733
817 467399 = 467399
818 230711 = 13 * 17747
819 257351 = 257351
820 242759 = 11 * 29 * 761
821 225671 = 225671
822 271319 = 181 * 1499
823 382919 = 382919
824 230879 = 11 * 139 * 151
825 316391 = 316391
826 273479 = 17 * 16087
827 251159 = 251159
828 238559 = 191 * 1249
829 289439 = 289439
830 266591 = 13 * 20507
831 236519 = 236519
832 239951 = 19 * 73 * 173
833 282959 = 282959
834 300551 = 37 * 8123
835 334991 = 334991
836 274559 = 463 * 593
837 255239 = 255239
838 274511 = 211 * 1301
839 336599 = 336599
840 246791 = 19 * 31 * 419
841 253679 = 253679
842 239399 = 41 * 5839
843 262391 = 262391
844 262631 = 181 * 1451
845 335999 = 335999
846 290111 = 19 * 15269
847 269519 = 269519
848 344351 = 7 * 49193
849 479879 = 479879
850 266279 = 13 * 20483
851 267959 = 267959
852 310631 = 19 * 16349
853 273719 = 273719
854 256871 = 61 * 4211
855 285071 = 285071
856 254999 = 19 * 13421
857 551951 = 551951
858 246671 = 97 * 2543
859 454991 = 454991
860 293471 = 17 * 61 * 283
861 302111 = 302111
862 345959 = 347 * 997
863 255191 = 255191
864 257039 = 37 * 6947
865 306479 = 306479
866 386759 = 439 * 881
867 354791 = 354791
868 288791 = 487 * 593
869 261791 = 261791
870 277079 = 11 * 25189
871 306239 = 306239
872 314639 = 13 * 24203
873 265151 = 265151
874 313799 = 311 * 1009
875 250799 = 250799
876 338519 = 503 * 673
877 297359 = 297359
878 319751 = 19 * 16829
879 378671 = 378671
880 239279 = 29 * 37 * 223
881 291191 = 291191
882 286919 = 19 * 15101
883 267671 = 267671
884 325415 = 5 * 37 * 1759
885 305231 = 305231
886 281111 = 109 * 2579
887 580031 = 580031
888 270479 = 11 * 67 * 367
889 440711 = 440711
890 264239 = 139 * 1901
891 327479 = 327479
892 250631 = 17 * 23 * 641
893 395111 = 395111
894 259871 = 151 * 1721
895 368471 = 368471
896 286079 = 43 * 6653
897 391151 = 391151
898 329159 = 101 * 3259
899 361919 = 361919
900 299519 = 11 * 73 * 373
901 417191 = 417191
902 320711 = 29 * 11059
903 300431 = 300431
904 324191 = 7 * 29 * 1597
905 322871 = 322871
906 396791 = 463 * 857
907 415631 = 415631
908 373295 = 5 * 13 * 5743
909 363719 = 363719
910 308831 = 53 * 5827
911 290351 = 290351
912 296999 = 23 * 37 * 349
913 357671 = 357671
914 390719 = 7 * 55817
915 342599 = 342599
916 280271 = 31 * 9041
917 307919 = 307919
918 277031 = 53 * 5227
919 303551 = 303551
920 304079 = 17 * 31 * 577
921 340919 = 340919
922 348071 = 107 * 3253
923 450479 = 450479
924 311519 = 13 * 31 * 773
925 314159 = 314159
926 349151 = 11 * 31741
927 364031 = 364031
928 360191 = 13 * 103 * 269
929 283799 = 283799
930 277679 = 23 * 12073
931 475271 = 475271
932 316151 = 11 * 41 * 701
933 317831 = 317831
934 349751 = 367 * 953
935 336551 = 336551
936 305399 = 29 * 10531
937 366239 = 366239
938 362039 = 277 * 1307
939 293999 = 293999
940 311351 = 23 * 13537
941 302279 = 302279
942 381671 = 59 * 6469
943 284231 = 284231
944 350831 = 13 * 26987
945 350159 = 350159
946 292991 = 67 * 4373
947 291359 = 291359
948 373511 = 311 * 1201
949 345791 = 345791
950 351911 = 7 * 50273
951 325079 = 325079
952 376031 = 37 * 10163
953 437111 = 437111
954 352439 = 31 * 11369
955 379679 = 379679
956 364199 = 11 * 113 * 293
957 413951 = 413951
958 426719 = 23 * 18553
959 405719 = 405719
960 338351 = 13 * 17 * 1531
961 383759 = 383759
962 373799 = 43 * 8693
963 289511 = 289511
964 313871 = 17 * 37 * 499
965 325751 = 325751
966 355631 = 349 * 1019
967 600959 = 600959
968 332111 = 13 * 59 * 433
969 382751 = 382751
970 336839 = 167 * 2017
971 494591 = 494591
972 351119 = 311 * 1129
973 348911 = 348911
974 301391 = 41 * 7351
975 376631 = 376631
976 341519 = 523 * 653
977 389399 = 389399
978 353279 = 149 * 2371
979 353471 = 353471
980 348311 = 79 * 4409
981 341879 = 341879
982 452399 = 37 * 12227
983 381911 = 381911
984 355319 = 19 * 18701
985 369071 = 369071
986 313199 = 41 * 7639
987 452759 = 452759
988 408239 = 13 * 31 * 1013
989 322559 = 322559
990 396431 = 7 * 56633
991 327071 = 327071
992 307271 = 109 * 2819
993 454079 = 454079
994 323111 = 103 * 3137
995 330431 = 330431
996 3
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