Q: Is 21,108 a Prime Number?
A: No, 21,108 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 21108 can be evenly divided by 1 2 3 4 6 12 1,759 3,518 5,277 7,036 10,554 and 21,108, with no remainder.
Since 21,108 cannot be divided by just 1 and 21,108, it is not a prime number.