Q: Is 2,121,608 a Prime Number?
A: No, 2,121,608 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 2121608 can be evenly divided by 1 2 4 8 163 326 652 1,304 1,627 3,254 6,508 13,016 265,201 530,402 1,060,804 and 2,121,608, with no remainder.
Since 2,121,608 cannot be divided by just 1 and 2,121,608, it is not a prime number.