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Prime candidates (Posted on 2016-12-20) Difficulty: 2 of 5
For what values of integer n are n^n + 1 and (2n)^(2n) + 1 both prime numbers?

See The Solution Submitted by Ady TZIDON    
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Some Thoughts re: solution -@ Paul | Comment 4 of 5 |
(In reply to solution by Paul)

Excellent expose, Paul.

I would like to post it as an "official" solution, - with a small modification- after the case of n=1 the sequel will be as follows:

...Let us consider n>1.
Clearly, when n is odd -  x^n + 1 is even, and therefore not prime.
Now for odd values of n   etc  etc
I hope to get your approval of the above clarification.
Please comment

  Posted by Ady TZIDON on 2016-12-20 22:34:05
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