Q: Is 21,120,019 a Composite Number?

 A: No, 21,120,019 is not a composite number; it is a prime number.

Why is 21,120,019 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 21,120,019 can be evenly divided by 1 and 21,120,019, with no remainder.

Since 21,120,019 can be divided by just 1 and 21,120,019, it is not a composite number.


More Examples

Number 21,120,01721,120,01821,120,02021,120,021
Composite? noyesyesyes
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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