the University of Tokyo computed to over 200 billion decimal places on the supercomputer HITACHI SR8000/MPP (128 nodes) using another variation of Ramanujan's infinite series of . In November 2002, Yasumasa Kanada and a team of 9 others used the Hitachi SR8000, a 64-node supercomputer with 1 terabyte of main memory, to calculate to roughly 1.24 trillion digits in around 600 hours (25days). Recent Records In August 2009, a Japanese supercomputer called the T2K Open Supercomputer more than doubled the previous record by calculating to roughly 2.6 trillion digits in approximately 73 hours and 36 minutes. In December 2009, Fabrice Bellard used a home computer to compute 2.7 trillion decimal digits of . Calculations were performed in base 2 (binary), then the result was converted to base 10 (decimal). The calculation, conversion, and verification steps took a total of 131 days. In August 2010, Shigeru Kondo used Alexander Yee's y-cruncher to calculate 5 trillion digits of . This was the world record for any type of calculation, but significantly it was performed on a home computer built by Kondo. The calculation was done between 4 May and 3 August, with the primary and secondary verifications taking 64 and 66 hours respectively. In October 2011, Shigeru Kondo broke his own record by computing ten trillion (1013) and fifty digits using the same method but with better hardware. In December 2013, Kondo broke his own record for a second time when he computed 12.1 trillion digits of . In October 2014, Sandon Van Ness, going by the pseudonym "houkouonchi" used y-cruncher to calculate 13.3 trillion digits of . In November 2016, Peter Trueb and his sponsors computed on y-cruncher and fully verified 22.4 trillion digits of (22,459,157,718,361 ( × 1012)). The computation took (with three interruptions) 105 days to complete, the limitation of further expansion being primarily storage space. In March 2019, Emma Haruka Iwao, an employee at Google, computed 31.4 (approximately ) trillion digits of pi using y-cruncher and Google Cloud machines. This took 121 days to complete. In January 2020, Timothy Mullican announced the computation of 50 trillion digits over 303 days. On August 14, 2021, a team (DAViS) at the University of Applied Sciences of the Grisons announced completion of the computation of to 62.8 (approximately ) trillion digits. On June 8th 2022, Emma Haruka Iwao announced on the Google Cloud Blog the computation of 100 trillion (1014) digits