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Prime and Twice Square (Posted on 2016-10-22) Difficulty: 4 of 5
Determine all possible values of a prime number P such that each of P+1 and P2 + 1 is twice a perfect square.

Prove that these are the only ones.

No Solution Yet Submitted by K Sengupta    
Rating: 3.5000 (2 votes)

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Solution A solution | Comment 1 of 4

  Posted by Math Man on 2016-10-22 11:49:50
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