Prove that if 2^n-1 is a prime then 2^n+1 is not a prime for n>2.
Is there a name for the primes of the form 2^n+1?
• 回复:Mersenne primes -passenger101- ♂ (443 bytes) () 01/29/2008 postreply 09:07:51
• A Better Proof -群众丁- ♂ (342 bytes) () 01/29/2008 postreply 10:26:32
• 回复:A Better Proof -passenger101- ♂ (10 bytes) () 01/29/2008 postreply 10:34:51
• Great! -eom -yma16- ♂ (0 bytes) () 01/29/2008 postreply 11:19:01