Q: Is 123,403 a Prime Number?

A: No, 123,403 is not a prime number.

Why is 123,403 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 123403 can be evenly divided by 1 7 17 61 119 289 427 1,037 2,023 7,259 17,629 and 123,403, with no remainder.

Since 123,403 cannot be divided by just 1 and 123,403, it is not a prime number.

Number	123,401	123,402	123,404	123,405
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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