Let $p \ge 5$ be prime. Prove $p^2 \equiv 1 \pmod{24}$

Asked Oct 10 '19 at 06:55

Active Oct 10 '19 at 19:26

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Let $p \ge 5$ be prime. Prove $p^2 \equiv 1 \pmod {24}$. I'm having some trouble drawing anything useful from $p$ being prime. What can we say about p being prime that will help prove the statement?

edited Oct 10 '19 at 19:26

Eric Wofsey

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asked Oct 10 '19 at 06:55

etkachuk

Let $p \ge 5$ be prime. Prove $p^2 \equiv 1 \pmod{24}$

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