Q: Is 123,978 a Prime Number?

A: No, 123,978 is not a prime number.

Why is 123,978 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 123978 can be evenly divided by 1 2 3 6 20,663 41,326 61,989 and 123,978, with no remainder.

Since 123,978 cannot be divided by just 1 and 123,978, it is not a prime number.

Number	123,976	123,977	123,979	123,980
Prime?	no	no	yes	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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