Q: Is 220,397 a Prime Number?
A: No, 220,397 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 220397 can be evenly divided by 1 433 509 and 220,397, with no remainder.
Since 220,397 cannot be divided by just 1 and 220,397, it is not a prime number.