For those who don't get it (probably fucking everyone here lmao), the constant shown here is the one used in this piece of absolute dark magic: https://en.wikipedia.org/wiki/Fast_inverse_square_root
meme tutorial
https://www.youtube.com/watch?v=Tp76cHN2FDU
^ The entire reddit thread:
http://i.imgur.com/V50vsAo.png
http://i.imgur.com/V50vsAo.png