The record for memorizing digits of pi, certified by Guinness World Records, is 67,890 digits, recited in China by Lu Chao in 24 hours and 4 minutes on 20 November 2005.
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3.14
3.141592653589793238462643383279502884197169399375105820974944592307816406286
Hiroyuki Goto of Tokyo, Japan.
In 2005, Lu Chao of China set a world record by memorising the first 67,890 digits of Pi
By memory, it is Hiroyuki Goto, who memorized and recited 42,195 in seventeen hours and twenty one minutes in 1995.