Q: Is 121,855 a Prime Number?
A: No, 121,855 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 121855 can be evenly divided by 1 5 24,371 and 121,855, with no remainder.
Since 121,855 cannot be divided by just 1 and 121,855, it is not a prime number.