[Empyrean]

I don't have any idea how to use it though.

I don't think anyone does. And the only people who DID, died before calculating the 15th digit of pi, which is "3", which incidentally is also the number of years it took them to calculate the first 14 digits. From then on, their social lives deteriorated and eventually nobody would have sex with them to procreate and perpetuate their culture. These people were also called the "Geek". A title that many years later would be misprinted as "Greek".