Q: Is 721,601 a Prime Number?
A: No, 721,601 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 721601 can be evenly divided by 1 19 163 233 3,097 4,427 37,979 and 721,601, with no remainder.
Since 721,601 cannot be divided by just 1 and 721,601, it is not a prime number.