Q: Is 423,003 a Prime Number?

A: No, 423,003 is not a prime number.

Why is 423,003 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 423003 can be evenly divided by 1 3 7 21 20,143 60,429 141,001 and 423,003, with no remainder.

Since 423,003 cannot be divided by just 1 and 423,003, it is not a prime number.

Number	423,001	423,002	423,004	423,005
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).

General Questions

Factoring Questions

Calculation Questions

Miscellaneous Questions