Q: Is 4,315,221 a Prime Number?
A: No, 4,315,221 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 4315221 can be evenly divided by 1 3 9 27 181 543 883 1,629 2,649 4,887 7,947 23,841 159,823 479,469 1,438,407 and 4,315,221, with no remainder.
Since 4,315,221 cannot be divided by just 1 and 4,315,221, it is not a prime number.