Q: Is 21,357 a Composite Number?

 A: Yes, 21,357 is a composite number.

Why is 21,357 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 21,357 can be evenly divided by 1 3 7 9 21 27 63 113 189 339 791 1,017 2,373 3,051 7,119 and 21,357, with no remainder.

Since 21,357 cannot be divided by just 1 and 21,357, it is a composite number.


More Examples

Number 21,35521,35621,35821,359
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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