Q: Is 718,640 a Prime Number?
A: No, 718,640 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 718640 can be evenly divided by 1 2 4 5 8 10 13 16 20 26 40 52 65 80 104 130 208 260 520 691 1,040 1,382 2,764 3,455 5,528 6,910 8,983 11,056 13,820 17,966 27,640 35,932 44,915 55,280 71,864 89,830 143,728 179,660 359,320 and 718,640, with no remainder.
Since 718,640 cannot be divided by just 1 and 718,640, it is not a prime number.