Q: Is 645,108 a Prime Number?
A: No, 645,108 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 645108 can be evenly divided by 1 2 3 4 6 12 53,759 107,518 161,277 215,036 322,554 and 645,108, with no remainder.
Since 645,108 cannot be divided by just 1 and 645,108, it is not a prime number.