Prove that there exist infinitely many primes of the form 4x+1 and infinitely many primes of the form 4x1.
We know that primes exist (other than 2 and 3) either side of a multiple of 6.
4 *3/2 =6
Let x= N*3/2 where N is an integer.
Have I missed something important in what was asked? I see D4.

Posted by brianjn
on 20121210 03:51:49 