Q: Is 221,318 a Prime Number?
A: No, 221,318 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 221318 can be evenly divided by 1 2 41 82 2,699 5,398 110,659 and 221,318, with no remainder.
Since 221,318 cannot be divided by just 1 and 221,318, it is not a prime number.