Q: Is 125,857 a Prime Number?
A: No, 125,857 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 125857 can be evenly divided by 1 127 991 and 125,857, with no remainder.
Since 125,857 cannot be divided by just 1 and 125,857, it is not a prime number.