Q: Is 20,709 a Prime Number?
A: No, 20,709 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 20709 can be evenly divided by 1 3 9 13 27 39 59 117 177 351 531 767 1,593 2,301 6,903 and 20,709, with no remainder.
Since 20,709 cannot be divided by just 1 and 20,709, it is not a prime number.