Q: Is 721,772 a Prime Number?
A: No, 721,772 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 721772 can be evenly divided by 1 2 4 19 38 76 9,497 18,994 37,988 180,443 360,886 and 721,772, with no remainder.
Since 721,772 cannot be divided by just 1 and 721,772, it is not a prime number.