Q: Is 221,418 a Prime Number?
A: No, 221,418 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 221418 can be evenly divided by 1 2 3 6 9 18 12,301 24,602 36,903 73,806 110,709 and 221,418, with no remainder.
Since 221,418 cannot be divided by just 1 and 221,418, it is not a prime number.