Q: Is 128,428 a Prime Number?
A: No, 128,428 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 128428 can be evenly divided by 1 2 4 97 194 331 388 662 1,324 32,107 64,214 and 128,428, with no remainder.
Since 128,428 cannot be divided by just 1 and 128,428, it is not a prime number.