Daniel Tammet, author of Born on a Blue Day: Inside the Extraordinary Mind of an Autistic Savant: a Memoir, in 2004 “raised money for an epilepsy charity by memorizing and publicly reciting the number pi to 22, 514 digits – a new European record” (New York Times, February 15, 2007, page F1).
The article continues:
“His decision to memorize and recite the digits of pi was an important turning point. Racked by nervousness the night before the recitation, he fell into a deep sleep and dreamed that he was walking through the landscape of pi -- that he was actually deep inside the number, enveloped by its sights and colors and textures.
The recitation took place at the Museum of the History of Science in Oxford, lasted five hours and nine minutes and was monitored by students from the department of mathematical sciences at Oxford Brookes University. Mr. Tammet made no mistakes.
''I wanted to go as far into the other place as I could go,'' he said, speaking of the world of numbers. ''Having reached that point, I felt I felt a kind of release because I could look back and in my mind's eye I could see all the numbers -- all 22,000 numbers in my head -- and I actually turned around in my head and waved them good-bye, because I knew that I wasn't going to see them again, I wasn't going to do something like that again.”
Read a recent book on mathematics to celebrate Pi Day: