Q: Is 777,798 a Prime Number?
A: No, 777,798 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 777798 can be evenly divided by 1 2 3 6 7 9 14 18 21 42 63 126 6,173 12,346 18,519 37,038 43,211 55,557 86,422 111,114 129,633 259,266 388,899 and 777,798, with no remainder.
Since 777,798 cannot be divided by just 1 and 777,798, it is not a prime number.