Q: Is 21,508 a Composite Number?
A: Yes, 21,508 is a composite number.
The number 21,508 can be evenly divided by 1 2 4 19 38 76 283 566 1,132 5,377 10,754 and 21,508, with no remainder.
Since 21,508 cannot be divided by just 1 and 21,508, it is a composite number.