Q: Is 278,435 a Prime Number?
A: No, 278,435 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 278435 can be evenly divided by 1 5 233 239 1,165 1,195 55,687 and 278,435, with no remainder.
Since 278,435 cannot be divided by just 1 and 278,435, it is not a prime number.