Q: Is 5,122,721 a Prime Number?
A: No, 5,122,721 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 5122721 can be evenly divided by 1 23 71 1,633 3,137 72,151 222,727 and 5,122,721, with no remainder.
Since 5,122,721 cannot be divided by just 1 and 5,122,721, it is not a prime number.