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Piphilology

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High Quality Content by WIKIPEDIA articles! Piphilology comprises the creation and use of mnemonic techniques to remember a span o...

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High Quality Content by WIKIPEDIA articles! Piphilology comprises the creation and use of mnemonic techniques to remember a span of digits of the mathematical constant . The word is a play on Pi itself and the linguistic field of philology. Even before computers calculated , memorizing a record number of digits became an obsession for some people. The current Guinness-recognized record for remembered digits of is 67,890 digits, held by Lu Chao, a 24-year-old graduate student from China. It took him 24 hours and 4 minutes to recite to the 67,890th decimal place of without an error. On October 3 2006 Akira Haraguchi reportedly was able to recite the first 100,000 decimal places of . On June, 17th, 2009 Andriy Slyusarchuk, a Ukrainian neurosurgeon, medical doctor and professor, claimed to have memorized the first 30 million places of . Although he did not recite the entire 30 million digits that he claims to have memorized, he was reportedly able to recite any randomly selected sequences from the 30 million digits.