Q: Is 278,889 a Prime Number?
A: No, 278,889 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 278889 can be evenly divided by 1 3 13 39 7,151 21,453 92,963 and 278,889, with no remainder.
Since 278,889 cannot be divided by just 1 and 278,889, it is not a prime number.