Q: Is 723,618 a Prime Number?
A: No, 723,618 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 723618 can be evenly divided by 1 2 3 6 7 9 14 18 21 42 63 126 5,743 11,486 17,229 34,458 40,201 51,687 80,402 103,374 120,603 241,206 361,809 and 723,618, with no remainder.
Since 723,618 cannot be divided by just 1 and 723,618, it is not a prime number.