Q: Is 21,868 a Composite Number?

 A: Yes, 21,868 is a composite number.

Why is 21,868 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 21,868 can be evenly divided by 1 2 4 7 11 14 22 28 44 71 77 142 154 284 308 497 781 994 1,562 1,988 3,124 5,467 10,934 and 21,868, with no remainder.

Since 21,868 cannot be divided by just 1 and 21,868, it is a composite number.


More Examples

Number 21,86621,86721,86921,870
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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