Q: Is 123,687 a Prime Number?

A: No, 123,687 is not a prime number.

Why is 123,687 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 123687 can be evenly divided by 1 3 9 27 81 243 509 1,527 4,581 13,743 41,229 and 123,687, with no remainder.

Since 123,687 cannot be divided by just 1 and 123,687, it is not a prime number.

Number	123,685	123,686	123,688	123,689
Prime?	no	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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