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## Problem of the Day #249: Prime Squares mod 24November 23, 2011

Posted by Saketh in : potd , trackback

Arthur is thinking of a prime such that its square is congruent to $1$ mod $24$. Find all primes he is definitely not thinking of.

## Comments»

1. Jinee - November 18, 2012

I think the squares of primes greater than or equal to 3 mod 24 = 1.