Q: Is 687,979 a Prime Number?

A: No, 687,979 is not a prime number.

Why is 687,979 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 687979 can be evenly divided by 1 443 1,553 and 687,979, with no remainder.

Since 687,979 cannot be divided by just 1 and 687,979, it is not a prime number.

Number	687,977	687,978	687,980	687,981
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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