Q: Is 721,744 a Prime Number?
A: No, 721,744 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 721744 can be evenly divided by 1 2 4 8 16 79 158 316 571 632 1,142 1,264 2,284 4,568 9,136 45,109 90,218 180,436 360,872 and 721,744, with no remainder.
Since 721,744 cannot be divided by just 1 and 721,744, it is not a prime number.