Q: Is 721,730 a Prime Number?
A: No, 721,730 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 721730 can be evenly divided by 1 2 5 10 72,173 144,346 360,865 and 721,730, with no remainder.
Since 721,730 cannot be divided by just 1 and 721,730, it is not a prime number.