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Pretty primes (Posted on 2017-04-10)

How any primes p exist such that
p⁴+1 is a prime number as well?

See The Solution Submitted by Ady TZIDON

Rating: 2.0000 (1 votes)

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re: solution

Comment 2 of 2 |

(In reply to solution by Daniel)

To simplify: p^4+1 must be odd so p must be even.

There is only one even prime, i.e. 2.

Since 2^4+1=17 is prime number , 2 is the answer.

Posted by Ady TZIDON on 2017-04-10 16:05:15

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