Q: Is 21,143,331 a Composite Number?

 A: Yes, 21,143,331 is a composite number.

Why is 21,143,331 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 21,143,331 can be evenly divided by 1 3 9 11 33 41 99 123 369 451 1,353 4,059 5,209 15,627 46,881 57,299 171,897 213,569 515,691 640,707 1,922,121 2,349,259 7,047,777 and 21,143,331, with no remainder.

Since 21,143,331 cannot be divided by just 1 and 21,143,331, it is a composite number.


More Examples

Number 21,143,32921,143,33021,143,33221,143,333
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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