Q: Is 518,722 a Prime Number?
A: No, 518,722 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 518722 can be evenly divided by 1 2 419 619 838 1,238 259,361 and 518,722, with no remainder.
Since 518,722 cannot be divided by just 1 and 518,722, it is not a prime number.