Timeline for Integers whose product is a primorial and primality of their sum or difference
Current License: CC BY-SA 3.0
10 events
| when toggle format | what | by | license | comment | |
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| Jan 24, 2018 at 20:54 | comment | added | Sylvain JULIEN | An interesting thing is that $ \log 6469693230 $ is quite close to $ 106/\log 106 $ . | |
| Jan 24, 2018 at 18:53 | comment | added | Aaron Meyerowitz | For the first nine primes one has that $82339-76729=277^2$ and the sum is prime. No other examples with 10-20 primes. There are three more examples with smaller numbers of primes. | |
| Jan 24, 2018 at 16:04 | comment | added | Gerhard Paseman | If one represents the prime powers as c and d, there are some mod 8 obstructions on the pair (c,d) (and maybe interesting obstructions mod m for some m), which may strongly limit the search space for such examples. Gerhard "Power Searching For Prime Powers" Paseman, 2018.01.24. | |
| Jan 24, 2018 at 15:50 | history | edited | Aaron Meyerowitz | CC BY-SA 3.0 |
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| Jan 24, 2018 at 15:33 | comment | added | Aaron Meyerowitz | Turns out not. I wonder about other small cases. | |
| Jan 24, 2018 at 15:32 | history | edited | Aaron Meyerowitz | CC BY-SA 3.0 |
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| Jan 24, 2018 at 15:19 | comment | added | Gerhard Paseman | 106 is more than I would have guessed for that problem. Any examples for the pure category? Gerhard "Needs Prime Sums Intuition Readjusted" Paseman, 2018.01.24. | |
| Jan 24, 2018 at 15:12 | history | edited | Aaron Meyerowitz | CC BY-SA 3.0 |
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| Jan 24, 2018 at 10:51 | vote | accept | Sylvain JULIEN | ||
| Jan 24, 2018 at 6:27 | history | answered | Aaron Meyerowitz | CC BY-SA 3.0 |