Pi

Calculate Pi to thousands of decimal places! The advent of digital computers in the 20th century led to an increased rate of new π calculation records. John von Neumann et al. used ENIAC to compute 2037 digits of π in 1949, a calculation that took 70 hours. Additional thousands of decimal places were obtained in the following decades Now YOU can calculate hundreds of thousands of decimal places of Pi on your own phone for free! What an extremely geeky pleasure!