Here's an interesting post for all you Know-It-All's and Nerds
I recently had a numerical multiples fight (duple, treble,....quattuordecuple, etc.) and I did a quick Google search, and found this site, Prefixes & Words Based On Latin Number Names that starts at single and continues to decemmillesimal (10,000), so next time you enter into a geeky number multiples battle, Be Prepared! Be Ready! And Dominate!
Thank You For Your Time.