Q: Is 13,221 a Prime Number?

A: No, 13,221 is not a prime number.

Why is 13,221 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 13221 can be evenly divided by 1 3 9 13 39 113 117 339 1,017 1,469 4,407 and 13,221, with no remainder.

Since 13,221 cannot be divided by just 1 and 13,221, it is not a prime number.

Number	13,219	13,220	13,222	13,223
Prime?	yes	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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