Q: Is 21,931 a Prime Number?

 A: No, 21,931 is not a prime number.

Why is 21,931 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 21931 can be evenly divided by 1 7 13 91 241 1,687 3,133 and 21,931, with no remainder.

Since 21,931 cannot be divided by just 1 and 21,931, it is not a prime number.


More Examples

Number 21,92921,93021,93221,933
Prime? yesnonono
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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