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A PARI/GP chronology

Upcoming events:
Jan 12-16 2026 24th Atelier PARI/GP 2026, Institut Mathématique de Bordeaux (IMB).

Jun 23-27 2025: Atelier libpari 2025, Institut Mathématique de Bordeaux (IMB).
Mar 5 2025: pari-2.17.2-stable released.
Jan 6-10 2025: 22th Atelier PARI/GP 2025, Institut Pascal, Paris Saclay

Dec 29 2024: xeus-gp-0.1.0 released.
Dec 24 2024: pari-2.17.1-stable released.
Nov 26 2024 PARI/GP has received one of the Free software for research 2024 awards, in category Community.
Oct 15 2024: First official release of xeus-gp, version 0.0.0.
Sep 30 2024: pari-2.17.0-stable released.
Apr 15-16 2024: 21th Atelier PARI/GP 2024b, U. Roma Tre, Roma.
Feb 23th 2024: pari-2.15.5-stable released.
Feb 19th - 23th 2024: 20th Atelier PARI/GP 2024 Chennai, IMSc Chennai, India.
Jan 8th - 12th 2024: 19th Atelier PARI/GP 2024, ENS Lyon

Jul 10th 2023: pari-2.15.4-stable released.
Jun 15th 2023: PARI/GP à Valenciennes Valenciennes, France
Mar 15th 2023: pari-2.15.3-stable released.
Mar 3th 2023: Aurel Page becomes the new PARI/GP project leader.
Feb 27th - Mar 3rd 2023 18th Atelier PARI/GP 2023 at conference COUNT, CIRM, Marseille.

Dec 31th 2022: pari-2.15.2-stable released.
Nov 23-24th 2022: Atelier PARI/GP 16 at LACSA (Oujda, Morocco).
Nov 4th 2022: pari-2.15.1-stable released.
Sep 19th 2022: pari-2.15.0-stable released.
Apr 5th 2022: pari-2.13.4-stable released.
Jan 10-14th 2022: Atelier PARI/GP 15 at LMB (Besançon).

Dec 24 2021: PARI/GP was awarded the ACM SIGSAM 2021 Richard D. Jenks Memorial Prize for Excellence in Software Engineering Applied to Computer Algebra.
Nov 29-30th 2021: 15th Atelier PARI 2021b, online
Oct 25th 2021: pari-2.13.3-stable released.
Jun 24th 2021: pari-2.13.2-stable released.
Jun 2nd 2021: PARI day 2021, online
Jan 21st 2021: pari-2.13.1-stable released.

Oct 19th 2020: pari-2.13.0-stable released.
Sep 16th 2020: pari-2.12.1 released [BETA].
May 05 2020: Bill Allombert is awarded the 2020 Crystal Medal by the French CNRS for his work on PARI/GP. Congratulations Bill !
Apr 17 2020: pari-2.11.4 released, dedicated to Peter Montgomery.
Mar 5th 2020: gp2c-0.0.11pl3 released.
Mar 3rd 2020: pari-2.11.3 released.
Jan 20-24 2020: Atelier PARI/GP 14, at Institut Fourier, Université Grenoble Alpes

June 3rd 2019: pari-2.12.0-testing released [ALPHA].
May 22th 2019: gp2c-0.0.11pl2 released.
May 12th 2019: pari-2.11.2 released.
Apr 8-9 2019: 13th Atelier PARI/GP 2019b at U. Roma Tre, Roma.
Jan 14-18 2019: Atelier PARI/GP 12, at IMB, Bordeaux.

Dec 2nd 2018: pari-2.11.1 released.
Oct 26th 2018: gp2c-0.0.11pl1 released.
July 19th 2018: gp2c-0.0.11 released.
July 19th 2018: pari-2.11.0-stable released.
July 4th 2018: pari-2.10.1-testing released (BETA).
June 25 2018: package GALPOL v4.0 released.
May 18 2018: pari-2.9.5-stable released.
May 14 2018: pari-2.10.0-testing released (ALPHA).
Apr 16-17 2018: Atelier PARI/GP 11 at U. Roma Tre (Roma).
Jan 15-19 2018: Atelier PARI/GP 10 at LMB (Besançon).
Jan 08 2018: pari-2.9.4-stable released.

Nov 22-23 2017: Atelier PARI/GP 9 at LACSA (Oujda, Morocco).
Jul 13 2017: pari-2.9.3-stable released.
Jun 19-23 2017: Atelier PARI/GP 8 at LMBP (Clermont-Ferrand).
Apr 5 2017: pari-2.9.2-stable released.
Jan 9-13 2017: Atelier PARI/GP 7 at ICJ (Lyon).

Dec 1 2016: pari-2.9.1-stable released.
Nov 3 2016: gp2c-0.0.10 released.
Nov 1 2016: pari-2.9.0-stable released.
Oct 24 2016: pari-2.8.1-testing released (BETA).
Aug 12 2016: pari-2.8.0-testing released (ALPHA).
Jun 21 2016: pari-2.7.6-stable released.
Jan 11-15 2016: Atelier PARI/GP 6 at IF (Grenoble).

Nov 9 2015: pari-2.7.5-stable released.
Jun 19 2015: pari-2.7.4-stable released.
Feb 18 2015: pari-2.7.3-stable released.
Jan 12-16 2015: Atelier PARI/GP 5 at IMB (Bordeaux).
Jan 11 2015: gp2c-0.0.9pl3 released.

Sep 19 2014: pari-2.7.2-stable released.
May 16 2014: pari-2.7.1-stable released.
Apr 17 2014: gp2c-0.0.9 released.
Mar 24 2014: pari-2.7.0-stable released.
Jan 30 2014: pari-2.6.2-beta released.
Jan 06-10 2014: Atelier PARI/GP 4 at LMB (Besançon).

Sep 21 2013: pari-2.5.5-stable released.
Sep 21 2013: gp2c-0.0.8 released.
Sep 20 2013: pari-2.6.1-alpha released.
May 15 2013: pari-2.6.0-alpha released.
May 13 2013: pari-2.5.4-stable released.
Jan 14-18 2013: Atelier PARI/GP 3 at IMB (Bordeaux).

Oct 2012: Sylvain Glaviano (Université de Bordeaux) creates a new PARI/GP logo.
Oct 2012: merged the old "PARI user resources" website with this site.
Oct 3 2012: pari-2.5.3-stable released.
Aug 4 2012: pari-2.5.2-stable released.
Feb 6 2012: pari-2.5.1-stable released.
Jan 23-27 2012: Atelier PARI/GP 2 at IMB (Bordeaux).

Sep 08 2011: migration of PARI repository from Subversion to GIT
July 2011: Charles Boyd writes an Android port PariDroid.
Jul 29 2011: gp2c-0.0.7 released.
Jul 20 2011: all mailing lists migrated from list.cr.yp.to to Bordeaux. (Many thanks for the old setup, Dan.)
Jun 22 2011: pari-2.5.0-stable released. Start of new development cycle 2.6.xxx.
Apr 29 2011: pari-2.4.4-testing and gp2c-0.0.6 released.

Oct 08 2010: pari-2.4.3-testing released.
Feb 05 2010: pari-2.3.5 released.

Sep 29 2008: Megrez number fields tables checked and repackaged.
Jul 23 2008: pari-2.3.4-stable released.
17 Jan 2008: migration of PARI repository from CVS to Subversion.

Dec 22 2007: pari-2.3.3-stable released.
Dec 12 2007: pari-2.4.2-testing released.
Oct 12 2007: Explicit Methods in Number Theory, an international conference in Bordeaux, on the occasion of the retirement of Henri Cohen. Paul Zimmermann unearths interesting historical material.
Mar 28 2007: pari-2.4.1-testing released.
Mar 28 2007: pari-2.3.2-stable released.

Oct 6 2006: start of new development cycle. Bugfix version pari-2.3.1-stable released. New development version pari-2.4.0-testing released.
Jun 17 2006: gp2c-0.0.5 released.
May 19 2006: stable pari-2.3.0 released.
Apr 26 2006: pari-2.2.13.beta released.
Jan 24 2006: pari-2.2.12.beta released.

Oct 19 2005: pari-2.2.11.alpha released.
Sep 20 2005: pari-2.1.7 released.
May 15 2005: gp2c-0.0.4 released.
Apr 17 2005: pari-2.2.10.alpha released.

Dec 23 2004: pari-2.2.9.alpha released.
Nov 11 2004: pari-2.2.8.alpha released.
Sep 13-17 2004: PARI/GP workshop at Institut Henri Poincaré, Paris (Atelier 1).
Jul 22 2004: Bug Tracking System released

Dec 18 2003: pari-2.2.7.alpha and gp2c-0.0.3 released.
Oct 24 2003: this website!
Oct 12 2003: test snapshot of self-installing Windows binary released. Hi-res graphics and polgalois() included!
Feb 11 2003: pari-2.2.5.alpha released. Starting whith this release, an alternative GNU MP multiprecision kernel is available.

Nov 18 2002: created the Fun page.
Oct 25 2002: started to compile a PARI/GP FAQ.
Oct 23 2002: added GP code and timings (versions 2.0.12, 2.1.4, 2.2.5) for Lewis-Wester bench.

Apr 30 2001: pari-2.2.0 released

Dec 23 2000: Bill Allombert releases the first GP2C prototype, just in time for Christmas.
Nov 17 2000: pari-2.1.0 released by "The PARI group", now under the GNU General Public License.

Sep 24 1999: pari-2.0.17.alpha released.
Sep 16 1999: PARI imported to a CVS repository.
1999: Bill Allombert joins the development team.
Nov 1997: Gerhard Niklasch creates the historical PARI logo.
Nov 14 1997: pari-2.0.alpha released.
1995: Karim Belabas becomes the project maintainer.
Jan 16 1995: pari-1.39 released by BaBe CoOl, the last major release in the original 1.xxx series.
Sept 1993: Niels Möller ports PARI/GP to the Amiga.
Feb 28 1990: international release of PARI 1.31, by BaBe CoOl.
1988: Dominique Bernardi finishes a Macintosh port.
1987: Dominique Bernardi joins the project and writes a new calculator using Algebraic Notation, e.g. 2 * (3 + 4). The calculator uses standard flow control instructions and allows to define one's own user functions. It is renamed gp, P for "Programmable".
1986: Christian Batut, Henri Cohen, and Michel Olivier write the first PARI assembly kernel and start fleshing out the PARI library. Batut writes the Grand Calculateur gc, which uses Reverse Polish Notation, e.g. 2 3 4 + * (evaluates to 14).
1983: first stages of the PARI project. François Dress proposes the PARI acronym.
1979: Henri Cohen and François Dress write the ISABELLE interpreter for higher arithmetic.