The group is famous in Japan as scientific and Otaku activities.
Their famous work is Pi one million digits (円周率1000000桁表, Enshuuritu Hyakumanketa Hyou) in 1996.
The book is introduced by Japanese TV programs in many times.
Monthly Pi (月刊円周率, Gekkan Enshuuritu) which is their monthly magazine, won the prize of "Best titled book in Japan (日本タイトルだけ大賞)" in 2012.
Many types of mathematical constants are provided online.