Q: Is 723,128 a Prime Number?
A: No, 723,128 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 723128 can be evenly divided by 1 2 4 7 8 14 28 37 56 74 148 259 296 349 518 698 1,036 1,396 2,072 2,443 2,792 4,886 9,772 12,913 19,544 25,826 51,652 90,391 103,304 180,782 361,564 and 723,128, with no remainder.
Since 723,128 cannot be divided by just 1 and 723,128, it is not a prime number.