Q: Is 628,317 a Prime Number?
A: No, 628,317 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 628317 can be evenly divided by 1 3 9 27 81 7,757 23,271 69,813 209,439 and 628,317, with no remainder.
Since 628,317 cannot be divided by just 1 and 628,317, it is not a prime number.