Q: Is 163,221 a Prime Number?
A: No, 163,221 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 163221 can be evenly divided by 1 3 41 123 1,327 3,981 54,407 and 163,221, with no remainder.
Since 163,221 cannot be divided by just 1 and 163,221, it is not a prime number.