Q: Is 21,159 a Prime Number?
A: No, 21,159 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 21159 can be evenly divided by 1 3 9 2,351 7,053 and 21,159, with no remainder.
Since 21,159 cannot be divided by just 1 and 21,159, it is not a prime number.