Yasumasa Kanada
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Yasumasa Kanada (金田 康正 Kanada Yasumasa?) is a Japanese mathematician most known for his numerous world records over the past two decades for calculating digits of π.
Kanada is a professor in the Department of Information Science at the University of Tokyo in Tokyo, Japan.
As of 2003, Kanada held the world record calculating the number of digits in the decimal expansion of pi – exactly 1.2411 trillion digits. The calculation took more than 600 hours on the supercomputer, 64 nodes of HITACHI SR8000/MPP. Some of his competitors in recent years include Jonathan and Peter Borwein and the Chudnovsky brothers.
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