Q: Is 857,239 a Prime Number?
A: No, 857,239 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 857239 can be evenly divided by 1 73 11,743 and 857,239, with no remainder.
Since 857,239 cannot be divided by just 1 and 857,239, it is not a prime number.