Q: Is 135,509 a Prime Number?
A: No, 135,509 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 135509 can be evenly divided by 1 11 97 127 1,067 1,397 12,319 and 135,509, with no remainder.
Since 135,509 cannot be divided by just 1 and 135,509, it is not a prime number.