Q: Is 121,599 a Prime Number?
A: No, 121,599 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 121599 can be evenly divided by 1 3 9 59 177 229 531 687 2,061 13,511 40,533 and 121,599, with no remainder.
Since 121,599 cannot be divided by just 1 and 121,599, it is not a prime number.