Q: Is 685,318 a Prime Number?
A: No, 685,318 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 685318 can be evenly divided by 1 2 342,659 and 685,318, with no remainder.
Since 685,318 cannot be divided by just 1 and 685,318, it is not a prime number.