Q: Is 278,315 a Prime Number?
A: No, 278,315 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 278315 can be evenly divided by 1 5 55,663 and 278,315, with no remainder.
Since 278,315 cannot be divided by just 1 and 278,315, it is not a prime number.