Q: Is 128,375 a Prime Number?
A: No, 128,375 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 128375 can be evenly divided by 1 5 13 25 65 79 125 325 395 1,027 1,625 1,975 5,135 9,875 25,675 and 128,375, with no remainder.
Since 128,375 cannot be divided by just 1 and 128,375, it is not a prime number.