What's new - What's
changed
What's new or what's changed in the world of Numbers, Constants and
Computation.
August 2008
- August 16: Record
of computation: 10,000,000,000 digits for
Catalan's constant by S. Kondo & S. Pagliarulo.
July 2008
- July 3: Record
of computation: 100,000,000,000 digits for the
Golden Ratio constant by S. Kondo & S. Pagliarulo.
June 2008
- June 30: Record
of computation on the g constant: 10,000,000,000 digits by S. Kondo & S. Pagliarulo.
- June 20: Record
of computation: 31,415,927,000 digits for the
Golden Ratio constant by X. Gourdon & P. Sebah.
May 2008
- May 26: Record
of computation: 17,000,000,000 digits for the
Golden Ratio constant by A.
Irlande. (achieved in march 2008)
April 2008
- April 29: Record
of computation: 16,180,340,000 digits for the
Golden Ratio constant by X.
Gourdon & P. Sebah.
- April 06: Records
of computation (most in 2007) on several constants by S. Kondo.
February 2007
- February 01: Record
of computation (dec. 2006) on the g constant: 116,580,041 digits by A. J. Yee.
January 2007
- January 30: Record
of computation on the constant z(3): 2,000,000,000 digits by H. Cheng, G. Hanrot, E. Thomé,
E. Zima & P. Zimmermann.
December 2005
- December 30: Update of the references
page (223 items).
October 2004
- October 24: Complete timings available for 1m, 16m and 100m digits for PiFast user constants in User constants page.
- October 12: Announcement and details of the numerical Riemann Hypothesis new record (on the first 10^13-th zero of Zeta) and zeros computation of Zeta function at very large height, in
Riemann
zeta function pages.
August 2004
- August 25: Update of the constant p page.
March 2004
February 2004
- February 25: Update of the collection
of series for the constant p page including the postscript file.
January 2004
- January 29: Update of the postscript associated
to the constant log 2
page.
December 2003
- December 23: Full update of the postscript
associated to the constant log 2
page.
November 2003
- November 30: Update of the references
page (210 items).
October 2003
- October 14: Update of the pifast pages with the latest records with PiFast.
Contains the announce of the record by Shigeru Kondo of the world
record computation of e with 50,100,000,000
digits and of p on a home computer with 25,000,000,000 digits.
- October 02: New record
of computation on the constant e: 50,100,000,000 digits by Shigeru Kondo.
- October 01: Record
of computation on the constant z(3): 1,000,000,000 digits by Patrick Demichel
(March 2003).
September 2003
- September 07: Update of the pifast pages with the latest record with PiFast.
Contains the announce of the record by Shigeru Kondo of the world
record computation of e with 25,100,000,000
digits.
August 2003
- August 13: New records
of computation on several constants:
- 17,100,000,000 digits for e by
Shigeru Kondo (March 2003),
- 16,693,288 digits for G(1/3) by Stefan Spännare (July 2003),
- 468 for the
Gauss-Kuzmin-Wirsing constant by Keith Briggs (July 2003).
July 2003
- July 23: Update of the Riemann
zeta function page. New pages about numerical evaluations of the
zeta-function and zeros of zeta are included.
- July 16: Update of the Riemann
zeta function page.
- July 08: Fixed version of the program pifast43,
available on pifast pages.
- July 05: Update of the pifast pages with the new version 4.3 of PiFast.
Contains the announce of the record by Shigeru Kondo of the p computation on a home
computer with 17,100,000,000 digits.
June 2003
- June 30: Update of the references
page (196 items).
May 2003
- May 28: Update of the tiny
programs page, with two additional tiny codes to compute the list of
consecutive prime numbers 2, 3, 5, 7, ...
April 2003
- April 19: Update of the tiny
programs page, with an impressive tiny code for the Euler constant
computation.
- April 18: New page on the history of the main
computations of the constant p and including a postscript and pdf files.
March 2003
- March 21: Update of the references
page (181 items).
February 2003
- February 12: Update of pifast pages, concerning records and large computations with
PiFast plus a new link to forum of overclockers running PiFast.
- February 12: Update of the tiny
programs page, with an improved version of the tiny executable
pi.com which is just 121 bytes long.
- February 12: Update of the gamma
page.
- February 12: Update of the n-th
digit computation page. Includes a new algorithm and program to compute
directly the n-th decimal digit of p
- February 7: Update of the related
links page.
January 2003
- January 13: Update of the tiny
programs page, including new tiny C program for p, a small assembly
p program, and a
C program from Fabrice Bellard that computes the largest known prime
number.
- January 7: New version of PiFast:
version 4.2 is now available. This new version is significantly faster than
the previous one.
December 2002
- December 11: New impressive record
of computation for the constant p: 1,241,100,000,000
digits by Yasumada Kanada and his team!
November 2002
- November 23: Update of the table
of digits page including new postscript
and pdf files.
October 2002
September 2002
August 2002
- August 29: New record
of computation for Brun's constant and for counting twin primes
up to large bound by Pascal Sebah.
July 2002
- July 29: Update of the twin primes and Brun's
constant page
including new postscript and pdf files.
- July 23: New record
of computation: 30,010 digits for the
Landau-Ramanujan K constant by Pascal Sebah.
June 2002
May 2002
- May 27: The pi(x)
table project phase II is open, you may contribute.
- May 8: Update of the classification
of numbers page including a new
postscript file.
- May 7: New record
of computation: 3,141,000,000 digits for the
Golden Ratio constant by Xavier
Gourdon & Pascal Sebah.
- May 3: Update of the collection
of series for the constant p page including a new
postscript file.
April 2002
March 2002
- March 18: New record
of computation: 201,000,000 digits for
Catalan's constant by Pascal Sebah.
- March 8: New record
of computation: 600,001,000 digits for the
log 2 and z(3)
constants by Shigeru Kondo.
February 2002
- February 21: Few new links (Euler's work,
biographies, guide, ...).
- February 5: Complete update of the Gamma
function page including a new postscript
file.
January 2002
December 2001
- December 14: Complete update of the e constant
page including the postscript file.
November 2001
October 2001
- October 14: New record
of computation: 500,001,000 digits for the
z(3) constant by Shigeru
Kondo.
- October 8: New user
constants PiFast files are available. Large computations table has
also been updated.
- October 4: Update of the Newton's
iteration page including a new
postscript file.
- October 3: New record
of computation: 100,000,500 digits for
Catalan's constant by Pascal Sebah.
September 2001
- September 25: New Fix
of version 4.1 of PiFast is available.
- September 20: New record
of computation: 200,001,000 digits for the
z(3) constant by Shigeru
Kondo.
- September 20: New record
of computation: 50,010,000 digits for
Catalan's constant by Pascal Sebah.
- September 19: New record
of computation: 500,000,999 digits for the
log 2 constant by Shigeru Kondo.
- September 7: New page
on the twin primes and Brun's constant including computational results on
counting twin primes up to large bounds.
- September 6: PiFast
4.1 is available. This new version allows to compute a large number of
digits many constants defined by hypergeometric series. New user constants are
available!
- September 6: Update of the page on the constant
log
2 and the associated formulae.
- September 4: New record
of computation: 240,000,000 digits for the
log 2 constant by Xavier Gourdon & Pascal Sebah.
August 2001
- August 28: New record
of computation: 8,010 digits for the
Mertens' constant by Pascal Sebah.
- August 25: Creation of the What's new - What's changed page.