Q: Is 399 a Prime Number?

 A: No, 399 is not a prime number.

Why is 399 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 399 can be evenly divided by 1 3 7 19 21 57 133 and 399, with no remainder.

Since 399 cannot be divided by just 1 and 399, it is not a prime number.


More Examples

Number 397398400401
Prime? yesnonoyes
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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