Q: Is 400,006 a Prime Number?

A: No, 400,006 is not a prime number.

Why is 400,006 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 400006 can be evenly divided by 1 2 200,003 and 400,006, with no remainder.

Since 400,006 cannot be divided by just 1 and 400,006, it is not a prime number.

Number	400,004	400,005	400,007	400,008
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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