Q: Is 123,603 a Prime Number?

A: No, 123,603 is not a prime number.

Why is 123,603 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 123603 can be evenly divided by 1 3 41,201 and 123,603, with no remainder.

Since 123,603 cannot be divided by just 1 and 123,603, it is not a prime number.

Number	123,601	123,602	123,604	123,605
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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