Q: Is 618,221 a Prime Number?
A: No, 618,221 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 618221 can be evenly divided by 1 101 6,121 and 618,221, with no remainder.
Since 618,221 cannot be divided by just 1 and 618,221, it is not a prime number.