Q: Is 1,221,008 a Prime Number?
A: No, 1,221,008 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 1221008 can be evenly divided by 1 2 4 8 16 17 34 67 68 134 136 268 272 536 1,072 1,139 2,278 4,489 4,556 8,978 9,112 17,956 18,224 35,912 71,824 76,313 152,626 305,252 610,504 and 1,221,008, with no remainder.
Since 1,221,008 cannot be divided by just 1 and 1,221,008, it is not a prime number.