perplexus.info :: Just Math : Prime to perfect square

Prime to perfect square (Posted on 2024-03-04)

Find all prime numbers p for which 71p + 1 is a perfect square.

No Solution Yet Submitted by Danish Ahmed Khan

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p =73, since; 71*73+1 = (72-1)(72+1)+1 = 72^2-1+1 = 72^2

Edited on March 4, 2024, 7:17 am

Posted by K Sengupta on 2024-03-04 07:02:53

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