Q: Is 21,455 a Composite Number?

 A: Yes, 21,455 is a composite number.

Why is 21,455 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 21,455 can be evenly divided by 1 5 7 35 613 3,065 4,291 and 21,455, with no remainder.

Since 21,455 cannot be divided by just 1 and 21,455, it is a composite number.


More Examples

Number 21,45321,45421,45621,457
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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