Q: Is 145,405 a Prime Number?
A: No, 145,405 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 145405 can be evenly divided by 1 5 13 65 2,237 11,185 29,081 and 145,405, with no remainder.
Since 145,405 cannot be divided by just 1 and 145,405, it is not a prime number.