Spencer Tunick interviewed:
JHN: I'm confident that you have seen more naked people than anyone else in the history of the world.
ST: More than Genghis Khan?
JHN: You've probably seen more people naked than there were people alive at the time of Genghis Khan.
ST: I have seen as many people naked, obviously, as I have photographed, over 100,000 people. Plus probably twenty.