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Old 2017-11-14, 15:38   #2
Dr Sardonicus
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Feb 2017

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Originally Posted by maxal View Post
Also, while this number is prime, this link says it's composite:
Pari-GP's isprime() says it's prime. Also, if you go to the link and hit the "factorize!" button, the "C" changes to "P" -- but, alas, the change doesn't "take."
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