Q: Is 2,121,273 a Prime Number?
A: No, 2,121,273 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 2121273 can be evenly divided by 1 3 7 9 11 21 33 63 77 99 231 693 3,061 9,183 21,427 27,549 33,671 64,281 101,013 192,843 235,697 303,039 707,091 and 2,121,273, with no remainder.
Since 2,121,273 cannot be divided by just 1 and 2,121,273, it is not a prime number.