51
The One Secret Scientists And Mathematicians Don't Want You To Know About The Most Important Number
(sopuli.xyz)
Most people think that in three dimensions the number 1 looks like the incorrect version drawn on the bottom right.
In fact it has been proven that the number 1 in three dimensional view actually has a planar base that extends in two dimensions from the stem of the 1.
Don't take my word for it, try it for yourself at home!
No, this is from my research notes I wrote myself.