Timeline for form of primes:prime plus a power of 2?
Current License: CC BY-SA 2.5
12 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 2, 2015 at 0:34 | comment | added | Brad Graham | @GjergjiZaimi where can i find the proof that there exists a $p \neq p' \pm 2^n$ ? | |
| Jul 29, 2011 at 21:03 | comment | added | Charles | @asterious gantzounis: Crocker showed that there are infinitely many odds not of that form, see oeis.org/A156695 I don't know if there are infinitely many primes not of that form -- it's been a while since I read his papers -- but I suspect the answer is "yes". | |
| Dec 22, 2010 at 16:44 | vote | accept | Asterios Gkantzounis | ||
| Dec 18, 2010 at 11:13 | comment | added | Gjergji Zaimi | i don't have an answer to the other question. | |
| Dec 18, 2010 at 11:08 | comment | added | Asterios Gkantzounis | thnx a lot as for the other question? | |
| Dec 18, 2010 at 10:58 | history | edited | Gjergji Zaimi | CC BY-SA 2.5 |
added 298 characters in body
|
| Dec 18, 2010 at 10:38 | comment | added | Asterios Gkantzounis | and a kind of joke :if i allow p=p'+/-2^m+/-2^n? | |
| Dec 18, 2010 at 10:29 | comment | added | Asterios Gkantzounis | do you have a good answer to this closed question too?mathoverflow.net/questions/49730/twin-primes-etc-closed | |
| Dec 18, 2010 at 10:26 | comment | added | Gjergji Zaimi | This last number is a counterexample to being a sum or difference of a prime and a power of 2, by the way. | |
| Dec 18, 2010 at 10:24 | comment | added | Gjergji Zaimi | Yes! Apparently a counterexample to that was given by Cohen and Selfridge. 47,867,742,232,066,880,047,611,079 and the proof is left as an exercise :) | |
| Dec 18, 2010 at 10:20 | comment | added | Asterios Gkantzounis | if i allow p=p'-2^n too? | |
| Dec 18, 2010 at 10:18 | history | answered | Gjergji Zaimi | CC BY-SA 2.5 |