Q: Is 13,509 a Prime Number?
A: No, 13,509 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 13509 can be evenly divided by 1 3 9 19 57 79 171 237 711 1,501 4,503 and 13,509, with no remainder.
Since 13,509 cannot be divided by just 1 and 13,509, it is not a prime number.