Q: Is 1,278,880 a Prime Number?
A: No, 1,278,880 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 1278880 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 80 160 7,993 15,986 31,972 39,965 63,944 79,930 127,888 159,860 255,776 319,720 639,440 and 1,278,880, with no remainder.
Since 1,278,880 cannot be divided by just 1 and 1,278,880, it is not a prime number.