Q: Is 278,109 a Prime Number?
A: No, 278,109 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 278109 can be evenly divided by 1 3 9 13 39 117 2,377 7,131 21,393 30,901 92,703 and 278,109, with no remainder.
Since 278,109 cannot be divided by just 1 and 278,109, it is not a prime number.