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What is 1 called if not a prime number?

Updated: 4/28/2022
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12y ago

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It is called a "unit".

Note: by definition, 1 can not be prime because all prime numbers are divisible by exactly 1 AND itself, with the AND inferring that there is a second factor. therefore all prime numbers have exactly 2 factors, 1 AND itself.

1 is the multiplicative identity

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Q: What is 1 called if not a prime number?
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