Q: Is 221,351 a Prime Number?
A: No, 221,351 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 221351 can be evenly divided by 1 13 17,027 and 221,351, with no remainder.
Since 221,351 cannot be divided by just 1 and 221,351, it is not a prime number.