Q: Is 506,721 a Prime Number?
A: No, 506,721 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 506721 can be evenly divided by 1 3 67 201 2,521 7,563 168,907 and 506,721, with no remainder.
Since 506,721 cannot be divided by just 1 and 506,721, it is not a prime number.