Q: Is 135,209 a Prime Number?
A: Yes, 135,209 is a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 135209 can be evenly divided by 1 and 135,209, with no remainder.
Since 135,209 can be divided by just 1 and 135,209, it is a prime number.