Q: Is 628,123 a Prime Number?
A: No, 628,123 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 628123 can be evenly divided by 1 523 1,201 and 628,123, with no remainder.
Since 628,123 cannot be divided by just 1 and 628,123, it is not a prime number.