Q: Is 421,004 a Prime Number?

A: No, 421,004 is not a prime number.

Why is 421,004 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 421004 can be evenly divided by 1 2 4 105,251 210,502 and 421,004, with no remainder.

Since 421,004 cannot be divided by just 1 and 421,004, it is not a prime number.

Number	421,002	421,003	421,005	421,006
Prime?	no	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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