Q: Is 21,879 a Composite Number?

 A: Yes, 21,879 is a composite number.

Why is 21,879 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 21,879 can be evenly divided by 1 3 9 11 13 17 33 39 51 99 117 143 153 187 221 429 561 663 1,287 1,683 1,989 2,431 7,293 and 21,879, with no remainder.

Since 21,879 cannot be divided by just 1 and 21,879, it is a composite number.


More Examples

Number 21,87721,87821,88021,881
Composite? yesyesyesno
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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