Q: Is 815,138 a Prime Number?
A: No, 815,138 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 815138 can be evenly divided by 1 2 19 38 361 722 1,129 2,258 21,451 42,902 407,569 and 815,138, with no remainder.
Since 815,138 cannot be divided by just 1 and 815,138, it is not a prime number.