Q: Is 21,680 a Composite Number?

 A: Yes, 21,680 is a composite number.

Why is 21,680 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 21,680 can be evenly divided by 1 2 4 5 8 10 16 20 40 80 271 542 1,084 1,355 2,168 2,710 4,336 5,420 10,840 and 21,680, with no remainder.

Since 21,680 cannot be divided by just 1 and 21,680, it is a composite number.


More Examples

Number 21,67821,67921,68121,682
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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