Q: Is 121,989 a Prime Number?
A: No, 121,989 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 121989 can be evenly divided by 1 3 7 21 37 111 157 259 471 777 1,099 3,297 5,809 17,427 40,663 and 121,989, with no remainder.
Since 121,989 cannot be divided by just 1 and 121,989, it is not a prime number.