Q: Is 21,512,431 a Composite Number?

 A: No, 21,512,431 is not a composite number; it is a prime number.

Why is 21,512,431 not 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 21,512,431 can be evenly divided by 1 and 21,512,431, with no remainder.

Since 21,512,431 can be divided by just 1 and 21,512,431, it is not a composite number.


More Examples

Number 21,512,42921,512,43021,512,43221,512,433
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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