Q: Is 778,628 a Prime Number?
A: No, 778,628 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 778628 can be evenly divided by 1 2 4 37 74 148 5,261 10,522 21,044 194,657 389,314 and 778,628, with no remainder.
Since 778,628 cannot be divided by just 1 and 778,628, it is not a prime number.