Q: Is 121,785 a Prime Number?
A: No, 121,785 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 121785 can be evenly divided by 1 3 5 15 23 69 115 345 353 1,059 1,765 5,295 8,119 24,357 40,595 and 121,785, with no remainder.
Since 121,785 cannot be divided by just 1 and 121,785, it is not a prime number.