Q: Is 21,545 a Composite Number?

 A: Yes, 21,545 is a composite number.

Why is 21,545 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 21,545 can be evenly divided by 1 5 31 139 155 695 4,309 and 21,545, with no remainder.

Since 21,545 cannot be divided by just 1 and 21,545, it is a composite number.


More Examples

Number 21,54321,54421,54621,547
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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