Q: Is 777,978 a Prime Number?
A: No, 777,978 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 777978 can be evenly divided by 1 2 3 6 9 18 27 54 14,407 28,814 43,221 86,442 129,663 259,326 388,989 and 777,978, with no remainder.
Since 777,978 cannot be divided by just 1 and 777,978, it is not a prime number.