Q: Is 9,721,621 a Prime Number?
A: No, 9,721,621 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 9721621 can be evenly divided by 1 7 13 47 91 329 611 2,273 4,277 15,911 29,549 106,831 206,843 747,817 1,388,803 and 9,721,621, with no remainder.
Since 9,721,621 cannot be divided by just 1 and 9,721,621, it is not a prime number.