Q: Is 21,518 a Composite Number?
A: Yes, 21,518 is a composite number.
The number 21,518 can be evenly divided by 1 2 7 14 29 53 58 106 203 371 406 742 1,537 3,074 10,759 and 21,518, with no remainder.
Since 21,518 cannot be divided by just 1 and 21,518, it is a composite number.