Q: Is 21,387,221 a Composite Number?

 A: Yes, 21,387,221 is a composite number.

Why is 21,387,221 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 21,387,221 can be evenly divided by 1 37 421 1,373 15,577 50,801 578,033 and 21,387,221, with no remainder.

Since 21,387,221 cannot be divided by just 1 and 21,387,221, it is a composite number.


More Examples

Number 21,387,21921,387,22021,387,22221,387,223
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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