Lu Chao
Encyclopedia
Lu Chao from China
China
Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

 is the recognized Guinness record holder for reciting digits of Pi
Pi
' is a mathematical constant that is the ratio of any circle's circumference to its diameter. is approximately equal to 3.14. Many formulae in mathematics, science, and engineering involve , which makes it one of the most important mathematical constants...

. He successfully recited 67,890 digits of pi in 24 hours and 4 minutes with an error at the 67,891st digit, saying it was a "5", when it was actually a "0". He stated he had 100,000 memorized, and was going to recite 91,300, but that one mistake cost him. He is planning to write a book about the method he uses, which is based upon many Chinese memorization techniques. He says it took him about 1 year to memorize 100,000 digits. He has no plans to beat his record unless someone else does. Lu Chao is the President of Zhengzhou
Zhengzhou
Zhengzhou , is the capital and largest city of Henan province in north-central China. A prefecture-level city, it also serves as the political, economic, technological, and educational centre of the province, as well as a major transportation hub for Central China...

Ruicheng Education & Counseling, Ltd.

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