Q: Is 123,378 a Prime Number?

A: No, 123,378 is not a prime number.

Why is 123,378 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 123378 can be evenly divided by 1 2 3 6 20,563 41,126 61,689 and 123,378, with no remainder.

Since 123,378 cannot be divided by just 1 and 123,378, it is not a prime number.

Number	123,376	123,377	123,379	123,380
Prime?	no	yes	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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