Q: Is 21,435 a Prime Number?

 A: No, 21,435 is not a prime number.

Why is 21,435 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 21435 can be evenly divided by 1 3 5 15 1,429 4,287 7,145 and 21,435, with no remainder.

Since 21,435 cannot be divided by just 1 and 21,435, it is not a prime number.


More Examples

Number 21,43321,43421,43621,437
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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