Q: Is 721,135 a Prime Number?
A: No, 721,135 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 721135 can be evenly divided by 1 5 233 619 1,165 3,095 144,227 and 721,135, with no remainder.
Since 721,135 cannot be divided by just 1 and 721,135, it is not a prime number.