Q: Is 121,666 a Prime Number?
A: No, 121,666 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 121666 can be evenly divided by 1 2 127 254 479 958 60,833 and 121,666, with no remainder.
Since 121,666 cannot be divided by just 1 and 121,666, it is not a prime number.