Q: Is 321,997 a Prime Number?

A: No, 321,997 is not a prime number.

Why is 321,997 not a prime number?

A prime number is a natural number, greater than one, that can only be divided by 1 and itself.

The number 321997 can be evenly divided by 1 13 17 31 47 221 403 527 611 799 1,457 6,851 10,387 18,941 24,769 and 321,997, with no remainder.

Since 321,997 cannot be divided by just 1 and 321,997, it is not a prime number.

Number	321,995	321,996	321,998	321,999
Prime?	no	no	no	no

All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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