Q: Is 720,518 a Prime Number?
A: No, 720,518 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 720518 can be evenly divided by 1 2 19 38 67 134 283 566 1,273 2,546 5,377 10,754 18,961 37,922 360,259 and 720,518, with no remainder.
Since 720,518 cannot be divided by just 1 and 720,518, it is not a prime number.