WON TOPIC 40

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[ July 1997 ]
Sequences in the expansion of

A NEW RECORD is set in the calculation of PI.
Declared record : 51.539.600.000 decimal digits
The Brouwer-Heyting Sequence
Table of current records for the computation of constants

Here are some interesting pandigital sequences :
0123456789 : from 17.387.594.880-th of pi
9876543210 : from 21.981.157.633-th of pi

A sequence of twelve 9's is detected in the value of 1/pi
999999999999 : from 12.479.021.132-th of 1/pi

Source : Record for pi : 51.5 billion decimal digits

Update [ October 11, 2002 ]

Dr Francis Podmore (Senior Lecturer), Department of Physics,
University of Zimbabwe, Mount Pleasant, Harare, Zimbabwe (email),
told me that the current record for the length of the number of
digits of pi is 206 billion, by Kanada in 1999.

A NEW RECORD was set in the calculation of PI. Declared record : 206.158.430.000 decimal digits by Yasumasa Kanada and Daisuke Takahashi Computing Pi to 206 billion digits by François Labelle

Update [ January 14, 2003 ]

1.241 TRILLION DIGITS of (Dec. 2002)

Again a NEW RECORD is set in the calculation of PI. Declared record : 1.241.100.000.000 decimal digits by Yasumasa Kanada (Kanada Laboratory home page) Some Background on Kanada's Recent Pi Calculation (in PDF) by David Bailey

Has this been beaten yet :-)

Sources
Wikipedia Pi
Wikipedia Computing Pi

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Patrick De Geest - Belgium

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E-mail address : pdg@worldofnumbers.com