Q: Is 397,521 a Prime Number?

A: No, 397,521 is not a prime number.

Why is 397,521 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 397521 can be evenly divided by 1 3 9 27 14,723 44,169 132,507 and 397,521, with no remainder.

Since 397,521 cannot be divided by just 1 and 397,521, it is not a prime number.

Number	397,519	397,520	397,522	397,523
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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