Q: Is 15,975 a Prime Number?

A: No, 15,975 is not a prime number.

Why is 15,975 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 15975 can be evenly divided by 1 3 5 9 15 25 45 71 75 213 225 355 639 1,065 1,775 3,195 5,325 and 15,975, with no remainder.

Since 15,975 cannot be divided by just 1 and 15,975, it is not a prime number.

Number	15,973	15,974	15,976	15,977
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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