Q: Is 491,157 a Prime Number?
A: No, 491,157 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 491157 can be evenly divided by 1 3 9 27 18,191 54,573 163,719 and 491,157, with no remainder.
Since 491,157 cannot be divided by just 1 and 491,157, it is not a prime number.