Q: Is 21,021 a Composite Number?

 A: Yes, 21,021 is a composite number.

Why is 21,021 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 21,021 can be evenly divided by 1 3 7 11 13 21 33 39 49 77 91 143 147 231 273 429 539 637 1,001 1,617 1,911 3,003 7,007 and 21,021, with no remainder.

Since 21,021 cannot be divided by just 1 and 21,021, it is a composite number.


More Examples

Number 21,01921,02021,02221,023
Composite? noyesyesno
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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