Q: Is 21,001,001 a Composite Number?

 A: Yes, 21,001,001 is a composite number.

Why is 21,001,001 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 21,001,001 can be evenly divided by 1 7 17 23 119 161 391 2,737 7,673 53,711 130,441 176,479 913,087 1,235,353 3,000,143 and 21,001,001, with no remainder.

Since 21,001,001 cannot be divided by just 1 and 21,001,001, it is a composite number.


More Examples

Number 21,000,99921,001,00021,001,00221,001,003
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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