Q: Is 9 a Prime Number?

 A: No, 9 is not a prime number.

Why is 9 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 9 can be evenly divided by 1 3 and 9, with no remainder.

Since 9 cannot be divided by just 1 and 9, it is not a prime number.

More Examples

Number 781011
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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