Q: Is 231,291 a Prime Number?

A: No, 231,291 is not a prime number.

Why is 231,291 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 231291 can be evenly divided by 1 3 9 31 93 279 829 2,487 7,461 25,699 77,097 and 231,291, with no remainder.

Since 231,291 cannot be divided by just 1 and 231,291, it is not a prime number.

Number	231,289	231,290	231,292	231,293
Prime?	yes	no	no	yes

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

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