Q: Is 21,375 a Composite Number?

 A: Yes, 21,375 is a composite number.

Why is 21,375 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 21,375 can be evenly divided by 1 3 5 9 15 19 25 45 57 75 95 125 171 225 285 375 475 855 1,125 1,425 2,375 4,275 7,125 and 21,375, with no remainder.

Since 21,375 cannot be divided by just 1 and 21,375, it is a composite number.


More Examples

Number 21,37321,37421,37621,377
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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