Q: Is 20,397 a Prime Number?
A: No, 20,397 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 20397 can be evenly divided by 1 3 13 39 523 1,569 6,799 and 20,397, with no remainder.
Since 20,397 cannot be divided by just 1 and 20,397, it is not a prime number.