Q: Is 128,729 a Prime Number?
A: No, 128,729 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 128729 can be evenly divided by 1 109 1,181 and 128,729, with no remainder.
Since 128,729 cannot be divided by just 1 and 128,729, it is not a prime number.