Akira Haraguchi
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Akira Haraguchi (原口證) (born 1946) is a Japanese mental health counsellor best known for memorizing and reciting digits of Pi. He set the current world record (100,000 digits) on October 3, 2006, and the previous world record (83,431) from July 1, 2005 to July 2, 2005. The event was filmed in a public hall in Kisarazu, east of Tokyo, where he had five-minute breaks every two hours to eat rice balls to keep up his energy levels.
Despite Haraguchi's efforts, Guinness World Records have not recorded either of the events and accredit the record to 42,195 decimal places by Hiroyuki Goto in 1995.