Q: Is 309,721 a Prime Number?

 A: No, 309,721 is not a prime number.

Why is 309,721 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 309721 can be evenly divided by 1 31 97 103 3,007 3,193 9,991 and 309,721, with no remainder.

Since 309,721 cannot be divided by just 1 and 309,721, it is not a prime number.


More Examples

Number 309,719309,720309,722309,723
Prime? nononono
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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