Q: Is 102,405 a Prime Number?
A: No, 102,405 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 102405 can be evenly divided by 1 3 5 15 6,827 20,481 34,135 and 102,405, with no remainder.
Since 102,405 cannot be divided by just 1 and 102,405, it is not a prime number.