Q: Is 21,915 a Composite Number?

 A: Yes, 21,915 is a composite number.

Why is 21,915 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 21,915 can be evenly divided by 1 3 5 9 15 45 487 1,461 2,435 4,383 7,305 and 21,915, with no remainder.

Since 21,915 cannot be divided by just 1 and 21,915, it is a composite number.


More Examples

Number 21,91321,91421,91621,917
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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