Q: Is 400,501 a Prime Number?

A: No, 400,501 is not a prime number.

Why is 400,501 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 400501 can be evenly divided by 1 19 107 197 2,033 3,743 21,079 and 400,501, with no remainder.

Since 400,501 cannot be divided by just 1 and 400,501, it is not a prime number.

Number	400,499	400,500	400,502	400,503
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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