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In chapter 73 of the series “The Big Bang Theory”, Sheldon Cooper says that his favorite number is 73, which is a unique number and gives several properties of this figure. But is it true that 73 is so special? Is it the only number that has those properties? Let's see! To find out more or to buy the book The Science of Science Fiction, more info here: http://bit.ly/2JIOZ37 Here you can see the article published in the American Mathematical Monthly: https://math.dartmouth.edu/~carlp/she... Subscribe to the channel! Follow Eduardo Sáenz de Cabezón: /edusadeci Follow us on Facebook: www.facebook.com/DerivandoYouTube