Forgot to mention n>1, i.e.,
(BN = 4^n + n^4 is never a prime for n>1.
(B
(BMax
(B
(BMax wrote:
(B> N = 4^n + n^4 is never a prime.
(B>
(B> For even n, it's even.
(B> And for odd n,
(B> 4^n+n^4 = (2^n+n^2)^2 - (n*2^((n+1)/2))^2 =
(B> (2^n+n^2-n*2^((n+1)/2))*(2^n+n^2+n*2^((n+1)/2))
(B>
(B> Max
(B>
(B> Kotera Hiroshi wrote:
(B>
(B>>Dear all
(B>>
(B>>Is 4^545+545^4 a prime number?
(B>>Please tell me by elementary explanation.
(B>>
(B>>Regards
(B>>++++++++++++++++++++++++++++++++
(B>>Hiroshi Kotera, D.Sc.
(B>>1014-4 Tokujo-cho Nara city Japan
(B>>[EMAIL PROTECTED]
(B>>www.wasan.jp
(B>>++++++++++++++++++++++++++++++++
(B>>
(B>>_______________________________________________
(B>>Prime mailing list
(B>>[email protected]
(B>>http://hogranch.com/mailman/listinfo/prime
(B>>
(B>>
(B>
(B> _______________________________________________
(B> Prime mailing list
(B> [email protected]
(B> http://hogranch.com/mailman/listinfo/prime
(B>
(B>
(B_______________________________________________
(BPrime mailing list
([email protected]
(Bhttp://hogranch.com/mailman/listinfo/prime
