Q: Is 398,723 a Prime Number?
A: No, 398,723 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 398723 can be evenly divided by 1 13 30,671 and 398,723, with no remainder.
Since 398,723 cannot be divided by just 1 and 398,723, it is not a prime number.