Q: Is 688,108 a Prime Number?
A: No, 688,108 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 688108 can be evenly divided by 1 2 4 172,027 344,054 and 688,108, with no remainder.
Since 688,108 cannot be divided by just 1 and 688,108, it is not a prime number.