Q: Is 21,138 a Composite Number?

 A: Yes, 21,138 is a composite number.

Why is 21,138 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 21,138 can be evenly divided by 1 2 3 6 13 26 39 78 271 542 813 1,626 3,523 7,046 10,569 and 21,138, with no remainder.

Since 21,138 cannot be divided by just 1 and 21,138, it is a composite number.


More Examples

Number 21,13621,13721,13921,140
Composite? yesyesnoyes
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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