Q: Is 221,123 a Prime Number?
A: No, 221,123 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 221123 can be evenly divided by 1 7 31 217 1,019 7,133 31,589 and 221,123, with no remainder.
Since 221,123 cannot be divided by just 1 and 221,123, it is not a prime number.