Q: Is 257,258 a Prime Number?
A: No, 257,258 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 257258 can be evenly divided by 1 2 128,629 and 257,258, with no remainder.
Since 257,258 cannot be divided by just 1 and 257,258, it is not a prime number.