Q: Is 121,779 a Prime Number?
A: No, 121,779 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 121779 can be evenly divided by 1 3 7 9 21 63 1,933 5,799 13,531 17,397 40,593 and 121,779, with no remainder.
Since 121,779 cannot be divided by just 1 and 121,779, it is not a prime number.