Contents[show] 81 Edit 81 is a square number that he is not figured-out. Special split Edit 81 has no split. Special Edit 81 is a square, but it doesn't appear in More to Explore. Saying Edit 81 has no saying. Retrieved from "https://number-blocks.fandom.com/wiki/Number_81?oldid=1042" Categories: Not Figured-Out Yet Compound Square number Number Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.