Q: Is 129,857 a Prime Number?
A: No, 129,857 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 129857 can be evenly divided by 1 7 13 91 1,427 9,989 18,551 and 129,857, with no remainder.
Since 129,857 cannot be divided by just 1 and 129,857, it is not a prime number.