Q: Is 121,879 a Prime Number?
A: No, 121,879 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 121879 can be evenly divided by 1 307 397 and 121,879, with no remainder.
Since 121,879 cannot be divided by just 1 and 121,879, it is not a prime number.