Find the smallest integer n that makes 11 x 14^n + 1, a prime number, or, prove that it doesn't exist.

(In reply to incomplete solu by phi)

Phi, I was thinking better in your way of solving this.

Once we already know that there´s no n that makes 11 x 14^n + 1 a prime, your reasoning must be :

a) N = 11 x 14^n + 1, for n= 1, equals 155, that is NOT a prime.

b) assuming that for n, 11 x 14^n +1 is NOT a prime (say , Q), we have to prove that this holds for n+1.

Posted by pcbouhid on 2005-06-22 03:26:54