Q: Is 678,397 a Prime Number?
A: No, 678,397 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 678397 can be evenly divided by 1 29 149 157 4,321 4,553 23,393 and 678,397, with no remainder.
Since 678,397 cannot be divided by just 1 and 678,397, it is not a prime number.