Q: Is 21,123,207 a Composite Number?

 A: Yes, 21,123,207 is a composite number.

Why is 21,123,207 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 21,123,207 can be evenly divided by 1 3 7 9 21 27 63 73 189 219 511 657 1,531 1,533 1,971 4,593 4,599 10,717 13,779 13,797 32,151 41,337 96,453 111,763 289,359 335,289 782,341 1,005,867 2,347,023 3,017,601 7,041,069 and 21,123,207, with no remainder.

Since 21,123,207 cannot be divided by just 1 and 21,123,207, it is a composite number.


More Examples

Number 21,123,20521,123,20621,123,20821,123,209
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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