3 = 3, 4, and 5 digits. As I have low numbers of these pictures. Then it's 6 digits, 7 digits. 8 is when it gets messy, as there a lot of images that are 8 digits. So 8-1 means 8 digits with the starting number 1. 8-2 is 8 digits starting number 2. And so on. 9 20000+ is 9 digits or more with...