Q: Is 40,521 a Prime Number?

A: No, 40,521 is not a prime number.

Why is 40,521 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 40521 can be evenly divided by 1 3 13 39 1,039 3,117 13,507 and 40,521, with no remainder.

Since 40,521 cannot be divided by just 1 and 40,521, it is not a prime number.

Number	40,519	40,520	40,522	40,523
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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