Q: Is 21,502 a Prime Number?
A: No, 21,502 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 21502 can be evenly divided by 1 2 13 26 827 1,654 10,751 and 21,502, with no remainder.
Since 21,502 cannot be divided by just 1 and 21,502, it is not a prime number.