Q: Is 128,139 a Prime Number?
A: No, 128,139 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 128139 can be evenly divided by 1 3 11 33 121 353 363 1,059 3,883 11,649 42,713 and 128,139, with no remainder.
Since 128,139 cannot be divided by just 1 and 128,139, it is not a prime number.