Q: Is 278,749 a Prime Number?
A: No, 278,749 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 278749 can be evenly divided by 1 17 19 323 863 14,671 16,397 and 278,749, with no remainder.
Since 278,749 cannot be divided by just 1 and 278,749, it is not a prime number.