Q: Is 21,187 a Composite Number?

 A: No, 21,187 is not a composite number; it is a prime number.

Why is 21,187 not a composite number?

A composite number is a number that can be divided evenly by more numbers than 1 and itself. It is the opposite of a prime number.

The number 21,187 can be evenly divided by 1 and 21,187, with no remainder.

Since 21,187 can be divided by just 1 and 21,187, it is not a composite number.


More Examples

Number 21,18521,18621,18821,189
Composite? yesyesyesyes
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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