Q: Is 121,389 a Prime Number?
A: No, 121,389 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 121389 can be evenly divided by 1 3 43 129 941 2,823 40,463 and 121,389, with no remainder.
Since 121,389 cannot be divided by just 1 and 121,389, it is not a prime number.