253

253 is the number of planets Weegee took over when he started the Super Intergalactic War for Domination.  It is also how you make the ² symbol on your computer when you press Alt with it.
==Super Intergalactic War for Domination==
Basically (to shorten this story for now), Weegee wanted to rule all of space so he headed off to conquer the universe.  He managed to successfully take over 253 planets but when he got to the next one, he was defeated by the Internet King.
==²==
When² you² press² Alt+253², you² get² the² "²" symbol².  Understand²?