Q: Is 121,128 a Prime Number?
A: No, 121,128 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 121128 can be evenly divided by 1 2 3 4 6 7 8 12 14 21 24 28 42 49 56 84 98 103 147 168 196 206 294 309 392 412 588 618 721 824 1,176 1,236 1,442 2,163 2,472 2,884 4,326 5,047 5,768 8,652 10,094 15,141 17,304 20,188 30,282 40,376 60,564 and 121,128, with no remainder.
Since 121,128 cannot be divided by just 1 and 121,128, it is not a prime number.