Q: Is 40,509 a Prime Number?

A: No, 40,509 is not a prime number.

Why is 40,509 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 40509 can be evenly divided by 1 3 7 9 21 63 643 1,929 4,501 5,787 13,503 and 40,509, with no remainder.

Since 40,509 cannot be divided by just 1 and 40,509, it is not a prime number.

Number	40,507	40,508	40,510	40,511
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).

General Questions

Factoring Questions

Calculation Questions

Miscellaneous Questions