Q: Is 400,004 a Prime Number?

A: No, 400,004 is not a prime number.

Why is 400,004 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 400004 can be evenly divided by 1 2 4 11 22 44 9,091 18,182 36,364 100,001 200,002 and 400,004, with no remainder.

Since 400,004 cannot be divided by just 1 and 400,004, it is not a prime number.

Number	400,002	400,003	400,005	400,006
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).

General Questions

Factoring Questions

Calculation Questions

Miscellaneous Questions