Q: Is 128,231 a Prime Number?
A: No, 128,231 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 128231 can be evenly divided by 1 17 19 323 397 6,749 7,543 and 128,231, with no remainder.
Since 128,231 cannot be divided by just 1 and 128,231, it is not a prime number.