Q: Is 721,330 a Prime Number?
A: No, 721,330 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 721330 can be evenly divided by 1 2 5 10 53 106 265 530 1,361 2,722 6,805 13,610 72,133 144,266 360,665 and 721,330, with no remainder.
Since 721,330 cannot be divided by just 1 and 721,330, it is not a prime number.