Q: Is 777,428 a Prime Number?
A: No, 777,428 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 777428 can be evenly divided by 1 2 4 263 526 739 1,052 1,478 2,956 194,357 388,714 and 777,428, with no remainder.
Since 777,428 cannot be divided by just 1 and 777,428, it is not a prime number.