Q: Is 40,215 a Prime Number?

A: No, 40,215 is not a prime number.

Why is 40,215 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 40215 can be evenly divided by 1 3 5 7 15 21 35 105 383 1,149 1,915 2,681 5,745 8,043 13,405 and 40,215, with no remainder.

Since 40,215 cannot be divided by just 1 and 40,215, it is not a prime number.

Number	40,213	40,214	40,216	40,217
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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