I have been told that there is some interesting mathematics to why the number 1 is not prime. Can someone explain why one is not a prime number?
2026-03-31 15:37:34.1774971454
Why 1 is not prime
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Because a prime number is a number that has exactly two distinct positive divisors.
Examples:
$2$ can be divided by $1$ and $2$
$11$ can be divided by $1$ and $11$
$1$ can be divided by $1$ and... $1$ so it is not prime.