Q: Is 278,888 a Prime Number?
A: No, 278,888 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 278888 can be evenly divided by 1 2 4 8 71 142 284 491 568 982 1,964 3,928 34,861 69,722 139,444 and 278,888, with no remainder.
Since 278,888 cannot be divided by just 1 and 278,888, it is not a prime number.