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seen Oct 5 '12 at 13:55

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Sep
30
comment Does this proposition really prove that n is not a prime?
Ah, I see. n can't divide a. I thought the notation meant a can't divide n.
Sep
30
comment Does this proposition really prove that n is not a prime?
How is 4 not divisible by 2?
Sep
30
asked Does this proposition really prove that n is not a prime?