People often consider the number 777 as lucky. “But why?” - you might ask. Well, consider the fact that if we convert the number 777 into base-2, we get 111111111. Again, if we convert it to base-6, we get 111111. That means, on at least two bases (b>1b>1b>1), the number 777 can be represented only using 111.

This is a companion discussion topic for the original entry at https://toph.co/p/lucky-number-seven