Q: Is 21,390 a Composite Number?

 A: Yes, 21,390 is a composite number.

Why is 21,390 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 21,390 can be evenly divided by 1 2 3 5 6 10 15 23 30 31 46 62 69 93 115 138 155 186 230 310 345 465 690 713 930 1,426 2,139 3,565 4,278 7,130 10,695 and 21,390, with no remainder.

Since 21,390 cannot be divided by just 1 and 21,390, it is a composite number.


More Examples

Number 21,38821,38921,39121,392
Composite? yesyesnoyes
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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