Q: Is 401,020 a Prime Number?

A: No, 401,020 is not a prime number.

Why is 401,020 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 401020 can be evenly divided by 1 2 4 5 10 20 20,051 40,102 80,204 100,255 200,510 and 401,020, with no remainder.

Since 401,020 cannot be divided by just 1 and 401,020, it is not a prime number.

Number	401,018	401,019	401,021	401,022
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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