Q: Is 21,236 a Prime Number?
A: No, 21,236 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 21236 can be evenly divided by 1 2 4 5,309 10,618 and 21,236, with no remainder.
Since 21,236 cannot be divided by just 1 and 21,236, it is not a prime number.