In any moment of decision, the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing. —Roosevelt
Najbolji broj je 73.73 je 21. prosti broj.Njegov zrcalni par, 37, je 12.,a njegov zrcalni par, 21,je nastao množenjem brojeva sedam i tri.U binarnom sustavu, 73 je palindrom: 1-0-0-1-0-0-1.