Re: prime numbers and African artifact

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: >> Correct me if I'm wrong but if a prime number is only divisible by itself
: >> and 1, 1 is prime. What else is it divisible by?

Whether or not 1 is prime is more a matter of convention than
definition. It's mathematically uncool to jump all over someone
just because he chooses different conventions, as long as he
makes his conventions different.

I could claim there are integers without unique factorisation.
I would be correct if I were talking about some Gaussian integers.

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• Next message: meron@cars3.uchicago.edu: "Re: Strange Maths (was Re: Why not 13 months?)"
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• Maybe in reply to: Jeffrey Shallit: "prime numbers and African artifact"
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