Alexander J Lee and Shigeru Kondo published pi to 10 trillion and 50 digits in October 2011. As of Feb 2013 that is the farthest,
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If I were you I would ask Google.com they have all the answers
Yes, Akira Haraguchi , a 60-year old has memorized and repeated 100,000 digits of PI in 16 hours.
Pi was first assigned as a symbol by mathematician William Jones in 1706.
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(Pi) is not an 'infinite number'. It just can't be written exactly with any finite number of digits. But there are plenty of digits available, to make your division as accurate as you want it. You can never get an exact answer, just like you can never write the exact value of (pi), but you can get as close as anyone will ever need to get.