Q: Is 720,378 a Prime Number?
A: No, 720,378 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 720378 can be evenly divided by 1 2 3 6 9 18 31 62 93 186 279 558 1,291 2,582 3,873 7,746 11,619 23,238 40,021 80,042 120,063 240,126 360,189 and 720,378, with no remainder.
Since 720,378 cannot be divided by just 1 and 720,378, it is not a prime number.