Q: Is 721,172 a Prime Number?
A: No, 721,172 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 721172 can be evenly divided by 1 2 4 29 58 116 6,217 12,434 24,868 180,293 360,586 and 721,172, with no remainder.
Since 721,172 cannot be divided by just 1 and 721,172, it is not a prime number.