A Japanese psychiatrist memorized
83,431 digits of pi. This man is Akira Haraguchi.
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Many people have memorized different-length portions of pi , but nobody has evermemorized all of pi , and nobody ever will, because pi can never be written downcompletely with digits.
Huroiki gotu< over 42,000 digits>
Lu Chao
Goto, Hiroyuki
Yes, Akira Haraguchi , a 60-year old has memorized and repeated 100,000 digits of PI in 16 hours.