Q: Is 278,340 a Prime Number?
A: No, 278,340 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 278340 can be evenly divided by 1 2 3 4 5 6 10 12 15 20 30 60 4,639 9,278 13,917 18,556 23,195 27,834 46,390 55,668 69,585 92,780 139,170 and 278,340, with no remainder.
Since 278,340 cannot be divided by just 1 and 278,340, it is not a prime number.