# if p|a^2, then p|a. True

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• June 21st 2010, 10:22 AM
Bruno J.
Quote:

Originally Posted by Ackbeet
I'm not sure I buy the theorem, unless $p$ is a prime. Is that a convention in number theory? If so, I would probably write out the prime factorization of $a$ and go from there.

Yes, $p$ usually stands for a prime number in elementary number theory.
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