Q: Is 257,109 a Prime Number?
A: No, 257,109 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 257109 can be evenly divided by 1 3 85,703 and 257,109, with no remainder.
Since 257,109 cannot be divided by just 1 and 257,109, it is not a prime number.