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Primary Problem 2 (Posted on 2012-12-09) Difficulty: 4 of 5
Prove that there exist infinitely many primes of the form 4x+1 and infinitely many primes of the form 4x-1.

No Solution Yet Submitted by Math Man    
Rating: 5.0000 (1 votes)

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Too simplistic? | Comment 1 of 4
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 2012-12-10 03:51:49
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