What is new or what is changed in the world of Numbers, Constants
and Computation.
August 2010
August 12:
Record of computation:
5,000,000,000,000 digits for the
constant p, on a single super PC, by S. Kondo and A.J. Yee. Read more here.
March 2010
March 23:
Record of computation:
1,000,000,000,000 digits for the square root of 2
constant on a single PC by S. Kondo and A.J. Yee.
February 2010
Februay 21:
Record of computation:
500,000,000,000 digits for the
constant e on a single PC and by A.J. Yee. Read more here.
January 2010
January 7:
Record of computation:
10,000,000,000 digits for the
constant
G(1/4)
by S. Kondo & S. Pagliarulo.
December 2009
December 31:
Record of computation:
2,699,999,990,000 digits for the
constant
p
by Fabrice Bellard. This was achieved on a single PC ! More here.
December 31:
Record of computation:
10,000,000,000 digits for the
constant
G(1/3)
by S. Kondo & S. Pagliarulo.
August 2009
August 17:
Record of computation:
2,576,980,370,000 digits for
the constant p by T. Daisuke
& Team.
April 2009
April 18:
Record of computation:
31,026,000,000 digits for
Catalan's constant by R. Chan & A.J. Yee.
March 2009
March 16:
Records of computation on the
g constant:
29,844,489,545 digits, the
log 2 constant:
31,026,000,000 digits and the
constant
z
(3):
31,026,000,000 digits by R.
Chan & A.J. Yee.
January 2009
January 31:
Record of computation:
15,510,000,000 digits for
Catalan's constant by R. Chan & A.J. Yee.
January 22:
Record of computation on the constant
z
(3):
15,510,000,000 digits by R.
Chan & A.J. Yee.
January 20:
Records of computation on the
g constant:
14,922,244,771 digits and the
log 2 constant:
15,500,000,000 digits by R.
Chan & A.J. Yee.
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 1, 16 and 100 millions of 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
March 31: Update of the postscript
file of the page
collection of series for the constant
p.
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 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.
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.
November 14: Complete update of the
Pythagoras' constant page including the postscript file.
October 2001
October 14: New
record of computation:
500,001,000 digits for the
z
(3)constant by Shigeru Kondo.
October 8: New
user constantsPiFast 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.