Q: Is 121,887 a Prime Number?
A: No, 121,887 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 121887 can be evenly divided by 1 3 9 29 87 261 467 1,401 4,203 13,543 40,629 and 121,887, with no remainder.
Since 121,887 cannot be divided by just 1 and 121,887, it is not a prime number.