All project challenges

Name Project Start time End time Team stats User stats Status
The Drive for Five PrimeGrid 2008-05-15 00:00 2008-06-01 00:00 Credit Rank Credit Rank Completed
PrimeGrid's Birthday (12 June 2005) PrimeGrid 2008-06-12 00:00 2008-06-13 00:00 Credit Rank Credit Rank Completed
The Lunar Landing Challenge PrimeGrid 2008-07-18 00:00 2008-07-21 00:00 Credit Rank Credit Rank Completed
The Dog Days of Summer Challenge PrimeGrid 2008-08-22 00:00 2008-08-25 00:00 Credit Rank Credit Rank Completed
Test a Tester yoyo@home 2008-08-17 00:00 2008-08-18 00:00 Credit Rank Credit Rank Completed
Final Push for ogr yoyo@home 2008-09-01 00:00 2008-09-15 00:00 Credit Rank Credit Rank Completed
The Back to the Future Challenge PrimeGrid 2008-09-13 18:00 2008-09-27 18:00 Credit Rank Credit Rank Completed
The Prime Time Challenge PrimeGrid 2008-11-14 18:00 2008-11-16 18:00 Credit Rank Credit Rank Completed
The Prime Time Challenge (Reloaded) PrimeGrid 2008-11-28 18:00 2008-11-30 18:00 Credit Rank Credit Rank Completed
The Winter Solstice Challenge PrimeGrid 2008-12-17 12:04 2008-12-21 12:04 Credit Rank Credit Rank Completed
The Year of the Ox Challenge PrimeGrid 2009-01-26 18:00 2009-01-31 18:00 Credit Rank Credit Rank Completed
The Ides of March Challenge PrimeGrid 2009-03-15 18:00 2009-03-16 18:00 Credit Rank Credit Rank Completed
The Showers to Flowers Challenge PrimeGrid 2009-04-29 18:00 2009-05-01 18:00 Credit Rank Credit Rank Completed
PrimeGrid's Birthday/Summer Solstice Challenge PrimeGrid 2009-06-12 05:45 2009-06-21 05:45 Credit Rank Credit Rank Completed
The New Moon Challenge PrimeGrid 2009-07-21 18:00 2009-07-22 18:00 Credit Rank Credit Rank Completed
The Dog Days of Summer Challenge PrimeGrid 2009-08-18 18:00 2009-08-23 18:00 Credit Rank Credit Rank Completed
The Harvest Festival Challenge PrimeGrid 2009-10-02 18:00 2009-10-04 18:00 Credit Rank Credit Rank Completed
The Giving Thanks Challenge PrimeGrid 2009-11-13 18:00 2009-11-14 18:00 Credit Rank Credit Rank Completed
The Winter Solstice Challenge PrimeGrid 2009-12-18 17:47 2009-12-21 17:47 Credit Rank Credit Rank Completed
The Year of the Tiger Challenge PrimeGrid 2010-02-14 18:00 2010-02-17 18:00 Credit Rank Credit Rank Completed
The Ides of March Challenge PrimeGrid 2010-03-15 18:00 2010-03-16 18:00 Credit Rank Credit Rank Completed
PrimeGrid's/Summer Solstice Challenge PrimeGrid 2010-06-16 11:28 2010-06-21 11:28 Credit Rank Credit Rank Completed
The Dog Days of Summer Challenge PrimeGrid 2010-08-20 18:00 2010-08-22 18:00 Credit Rank Credit Rank Completed
The Calendula Challenge PrimeGrid 2010-09-24 18:00 2010-10-07 18:00 Credit Rank Credit Rank Completed
The Winter Solstice Challenge PrimeGrid 2010-12-18 18:00 2010-12-21 18:00 Credit Rank Credit Rank Completed
The Leonids Challenge PrimeGrid 2010-11-17 18:00 2010-11-18 18:00 Credit Rank Credit Rank Completed
-Pre- Dnetc Rush Day - Jacek Karpinski Challenge DNETC@HOME 2010-11-13 18:00 2010-11-14 18:00 Credit Rank Credit Rank Completed
Dnetc Rush Day - Bernhard Riemann Challenge DNETC@HOME 2010-12-16 18:00 2010-12-18 18:00 Credit Rank Credit Rank Completed
The Year of the Rabbit Challenge PrimeGrid 2011-02-03 18:00 2011-02-06 18:00 Credit Rank Credit Rank Completed
Dnetc Rush Day "Aquarius Race" DNETC@HOME 2011-02-11 18:00 2011-02-13 18:00 Credit Rank Credit Rank Completed
The World Maths Day Challenge PrimeGrid 2011-03-01 18:00 2011-03-02 18:00 Credit Rank Credit Rank Completed
Marie-Sophie Germain Challenge PrimeGrid 2011-04-01 18:00 2011-04-03 18:00 Credit Rank Credit Rank Completed
PrimeGrid's/Summer Solstice Challenge PrimeGrid 2011-06-21 17:16 2011-06-22 17:16 Credit Rank Credit Rank Completed
The Dog Days of Summer Challenge PrimeGrid 2011-08-26 18:00 2011-08-28 18:00 Credit Rank Credit Rank Completed
The Equinox Challenge PrimeGrid 2011-09-23 18:00 2011-10-06 18:00 Credit Rank Credit Rank Completed
The Leonids Challenge PrimeGrid 2011-11-18 18:00 2011-11-23 18:00 Credit Rank Credit Rank Completed
The Winter Solstice Challenge PrimeGrid 2011-12-19 05:30 2011-12-22 05:30 Credit Rank Credit Rank Completed
Dnetc Rush Day "Pisces Race" DNETC@HOME 2011-03-11 18:00 2011-03-13 18:00 Credit Rank Credit Rank Completed
Summer heat up DNETC@HOME 2011-06-08 18:00 2011-06-11 18:00 Credit Rank Credit Rank Completed
The Leap Day Challenge PrimeGrid 2012-02-29 18:00 2012-03-01 18:00 Credit Rank Credit Rank Completed
The Marie-Sophie Germain Challenge PrimeGrid 2012-04-01 18:00 2012-04-03 18:00 Credit Rank Credit Rank Completed
The Cinco de Mayo Challenge PrimeGrid 2012-05-05 18:00 2012-05-10 18:00 Credit Rank Credit Rank Completed
The Alan Turing Year Challenge PrimeGrid 2012-06-20 23:09 2012-06-23 23:09 Credit Rank Credit Rank Completed
The Olympics Challenge PrimeGrid 2012-08-03 18:00 2012-08-05 18:00 Credit Rank Credit Rank Completed
An Apple a Day... Challenge PrimeGrid 2012-10-05 18:00 2012-10-06 18:00 Credit Rank Credit Rank Completed
The 321 Blast Off Challenge PrimeGrid 2012-11-01 18:00 2012-11-09 18:00 Credit Rank Credit Rank Completed
The Winter Solstice Challenge PrimeGrid 2012-12-18 11:11 2012-12-21 11:11 Credit Rank Credit Rank Completed
Rainbow Resurrection Challenge DistrRTgen 2012-04-07 16:00 2012-04-10 16:00 Credit Rank Credit Rank Completed
The Low Country Festivities Challenge PrimeGrid 2013-04-29 18:00 2013-05-07 18:00 Credit Rank Credit Rank Completed
The Father's Challenge PrimeGrid 2013-06-14 18:00 2013-06-17 18:00 Credit Rank Credit Rank Completed
The Perseid Shower Challenge PrimeGrid 2013-08-12 18:00 2013-08-14 18:00 Credit Rank Credit Rank Completed
The World Animal Day Challenge PrimeGrid 2013-10-04 18:00 2013-10-09 18:00 Credit Rank Credit Rank Completed
The Leonids Challenge PrimeGrid 2013-11-14 18:00 2013-11-19 18:00 Credit Rank Credit Rank Completed
The Winter Solstice Challenge PrimeGrid 2013-12-18 17:11 2013-12-21 17:11 Credit Rank Credit Rank Completed
The Father's Day Challenge PrimeGrid 2013-06-15 18:00 2013-06-18 18:00 Credit Rank Credit Rank Completed
The Year of the Horse - Stallion Edition Challenge PrimeGrid 2014-01-03 18:00 2014-01-18 18:00 Credit Rank Credit Rank Completed
The Double Top Secret Mystery Challenge PrimeGrid 2014-03-01 18:00 2014-03-16 18:00 Credit Rank Credit Rank Completed
The Shakespeare's Birthday Challenge PrimeGrid 2014-04-20 16:16 2014-04-23 16:16 Credit Rank Credit Rank Completed
The Race to the New Moon Challenge PrimeGrid 2014-05-20 19:43 2014-05-28 19:43 Credit Rank Credit Rank Completed
The Sovereign Challenge PrimeGrid 2014-06-25 18:00 2014-06-28 18:00 Credit Rank Credit Rank Completed
The Perseid Shower Challenge PrimeGrid 2014-08-12 18:00 2014-08-14 18:00 Credit Rank Credit Rank Completed
The World Animal Day Challenge PrimeGrid 2014-10-04 18:00 2014-10-09 18:00 Credit Rank Credit Rank Completed
The Leonids Challenge PrimeGrid 2014-11-14 18:00 2014-11-19 18:00 Credit Rank Credit Rank Completed
The Saint Nicholas' Challenge PrimeGrid 2014-12-05 00:00 2014-12-06 00:00 Credit Rank Credit Rank Completed
The Winter Solstice Challenge PrimeGrid 2014-12-18 17:11 2014-12-21 17:11 Credit Rank Credit Rank Completed
The Winter Solstice Challenge PrimeGrid 2014-12-18 23:03 2014-12-21 23:03 Credit Rank Credit Rank Completed
The Year of the Sheep Challenge PrimeGrid 2015-01-03 18:00 2015-01-11 18:00 Credit Rank Credit Rank Completed
The Solar Eclipse Challenge PrimeGrid 2015-03-15 07:41 2015-03-20 07:41 Credit Rank Credit Rank Completed
The World Expo Challenge PrimeGrid 2015-04-23 18:00 2015-05-01 18:00 Credit Rank Credit Rank Completed
The PrimeGrid Birthday Challenge PrimeGrid 2015-06-12 18:00 2015-04-15 18:00 Credit Rank Credit Rank Completed
The Perseid Shower Challenge PrimeGrid 2015-08-10 18:00 2015-08-12 18:00 Credit Rank Credit Rank Completed
The Reign Record Challenge PrimeGrid 2015-09-10 18:00 2015-09-15 18:00 Credit Rank Credit Rank Completed
The World Animal Day Challenge PrimeGrid 2015-10-04 18:00 2015-10-09 18:00 Credit Rank Credit Rank Completed
The Leonids Shower Challenge PrimeGrid 2015-11-12 18:00 2015-11-17 18:00 Credit Rank Credit Rank Completed
The Winter Solstice Challenge PrimeGrid 2015-12-19 04:48 2015-12-22 04:48 Credit Rank Credit Rank Completed
The Leonids Shower Challenge PrimeGrid 2015-11-14 18:00 2015-11-17 18:00 Credit Rank Credit Rank Completed
The Makar Sankranti Challenge PrimeGrid 2016-01-07 18:00 2016-01-15 18:00 Credit Rank Credit Rank Completed
The Drive for Five PrimeGrid 2008-05-15 00:00 2008-06-01 00:00 Credit Rank Credit Rank Completed
PrimeGrid's Birthday (12 June 2005) PrimeGrid 2008-06-12 00:00 2008-06-13 00:00 Credit Rank Credit Rank Completed
The Lunar Landing Challenge PrimeGrid 2008-07-18 00:00 2008-07-21 00:00 Credit Rank Credit Rank Completed
The Dog Days of Summer Challenge PrimeGrid 2008-08-22 00:00 2008-08-25 00:00 Credit Rank Credit Rank Completed
The Back to the Future Challenge PrimeGrid 2008-09-13 18:00 2008-09-27 18:00 Credit Rank Credit Rank Completed
The Prime Time Challenge PrimeGrid 2008-11-14 18:00 2008-11-16 18:00 Credit Rank Credit Rank Completed
The Prime Time Challenge (Reloaded) PrimeGrid 2008-11-28 18:00 2008-11-30 18:00 Credit Rank Credit Rank Completed
The Winter Solstice Challenge PrimeGrid 2008-12-17 12:04 2008-12-21 12:04 Credit Rank Credit Rank Completed
The Year of the Ox Challenge PrimeGrid 2009-01-26 18:00 2009-01-31 18:00 Credit Rank Credit Rank Completed
The Ides of March Challenge PrimeGrid 2009-03-15 18:00 2009-03-16 18:00 Credit Rank Credit Rank Completed
The Showers to Flowers Challenge PrimeGrid 2009-04-29 18:00 2009-05-01 18:00 Credit Rank Credit Rank Completed
PrimeGrid's Birthday/Summer Solstice Challenge PrimeGrid 2009-06-12 05:45 2009-06-21 05:45 Credit Rank Credit Rank Completed
The New Moon Challenge PrimeGrid 2009-07-21 18:00 2009-07-22 18:00 Credit Rank Credit Rank Completed
The Dog Days of Summer Challenge PrimeGrid 2009-08-18 18:00 2009-08-23 18:00 Credit Rank Credit Rank Completed
The Harvest Festival Challenge PrimeGrid 2009-10-02 18:00 2009-10-04 18:00 Credit Rank Credit Rank Completed
The Giving Thanks Challenge PrimeGrid 2009-11-13 18:00 2009-11-14 18:00 Credit Rank Credit Rank Completed
The Winter Solstice Challenge PrimeGrid 2009-12-18 17:47 2009-12-21 17:47 Credit Rank Credit Rank Completed
The Year of the Tiger Challenge PrimeGrid 2010-02-14 18:00 2010-02-17 18:00 Credit Rank Credit Rank Completed
The Ides of March Challenge PrimeGrid 2010-03-15 18:00 2010-03-16 18:00 Credit Rank Credit Rank Completed
The Earth Day Challenge PrimeGrid 2010-04-22 18:00 2010-04-30 18:00 Credit Rank Credit Rank Completed
The Full Moon Challenge PrimeGrid 2010-07-25 18:00 2010-07-26 18:00 Credit Rank Credit Rank Completed
The Dog Days of Summer Challenge PrimeGrid 2010-08-20 18:00 2010-08-22 18:00 Credit Rank Credit Rank Completed
The Calendula Challenge PrimeGrid 2010-09-24 18:00 2010-10-07 18:00 Credit Rank Credit Rank Completed
The Leonids Challenge PrimeGrid 2010-11-17 18:00 2010-11-18 18:00 Credit Rank Credit Rank Completed
The Winter Solstice Challenge PrimeGrid 2010-12-18 18:00 2010-12-21 18:00 Credit Rank Credit Rank Completed
The Year of the Rabbit Challenge PrimeGrid 2011-02-03 18:00 2011-02-06 18:00 Credit Rank Credit Rank Completed
The World Maths Day Challenge PrimeGrid 2011-03-01 18:00 2011-03-02 18:00 Credit Rank Credit Rank Completed
Marie-Sophie Germain Challenge PrimeGrid 2011-04-01 18:00 2011-04-03 18:00 Credit Rank Credit Rank Completed
Cinco de Mayo Challenge PrimeGrid 2011-05-05 18:00 2011-05-13 18:00 Credit Rank Credit Rank Completed
PrimeGrid's/Summer Solstice Challenge PrimeGrid 2011-06-21 17:16 2011-06-22 17:16 Credit Rank Credit Rank Completed
The Dog Days of Summer Challenge PrimeGrid 2011-08-26 18:00 2011-08-28 18:00 Credit Rank Credit Rank Completed
The Equinox Challenge PrimeGrid 2011-09-23 18:00 2011-10-06 18:00 Credit Rank Credit Rank Completed
The Leonids Challenge PrimeGrid 2011-11-18 18:00 2011-11-23 18:00 Credit Rank Credit Rank Completed
The Winter Solstice Challenge PrimeGrid 2011-12-19 05:30 2011-12-22 05:30 Credit Rank Credit Rank Completed
The From Pi to Paddy Challenge PrimeGrid 2016-03-14 03:14 2016-03-17 03:14 Credit Rank Credit Rank Completed
The Cullen Birthday Challenge PrimeGrid 2016-04-19 18:00 2016-04-28 18:00 Credit Rank Credit Rank Completed
The Summer Solstice Challenge PrimeGrid 2016-06-20 22:34 2016-06-25 22:34 Credit Rank Credit Rank Completed
The Summer Olympics Challenge PrimeGrid 2016-08-02 21:00 2016-08-05 21:00 Credit Rank Credit Rank Completed
The Summer Paralympics Challenge PrimeGrid 2016-09-02 18:00 2016-09-07 18:00 Credit Rank Credit Rank Completed
The World Space Week Kickoff Challenge PrimeGrid 2016-10-03 18:00 2016-10-04 18:00 Credit Rank Credit Rank Completed
The Wallis is Born Challenge PrimeGrid 2016-11-18 18:00 2016-11-23 18:00 Credit Rank Credit Rank Completed
The Winter Solstice Challenge PrimeGrid 2016-12-18 10:44 2016-12-21 10:44 Credit Rank Credit Rank Completed
Isaac Newton's Birthday Challenge PrimeGrid 2017-01-03 18:00 2017-01-13 18:00 Credit Rank Credit Rank Completed
Year of the Fire Rooster Challenge PrimeGrid 2017-03-10 12:00 2017-03-25 12:00 Credit Rank Credit Rank Completed
Mathematics Awareness Month Challenge PrimeGrid 2017-04-07 12:00 2017-04-22 12:00 Credit Rank Credit Rank Completed
PrimeGrid's Birthday Challenge PrimeGrid 2017-06-12 00:00 2017-06-13 00:00 Credit Rank Credit Rank Completed
Solar Eclipse Challenge PrimeGrid 2017-08-20 18:00 2017-08-23 18:00 Credit Rank Credit Rank Completed
Number Theory Week Challenge PrimeGrid 2017-09-03 18:00 2017-09-08 18:00 Credit Rank Credit Rank Completed
Diwali/Deepavali Challenge PrimeGrid 2017-10-18 00:00 2017-10-23 00:00 Credit Rank Credit Rank Completed
Pierre de Fermat's Birthday Challenge PrimeGrid 2017-11-17 12:00 2017-11-20 12:00 Credit Rank Credit Rank Completed
The Winter Solstice Challenge PrimeGrid 2017-12-18 16:28 2017-12-21 16:28 Credit Rank Credit Rank Completed
Year of the Dog Challenge PrimeGrid 2018-03-16 18:00 2018-03-23 18:00 Credit Rank Credit Rank Completed
Mathematics Awareness Month Challenge PrimeGrid 2018-04-03 12:00 2018-04-08 12:00 Credit Rank Credit Rank Completed
World Cup Challenge PrimeGrid 2018-06-14 00:00 2018-06-19 00:00 Credit Rank Credit Rank Completed
Solar Eclipse Challenge PrimeGrid 2018-08-10 18:00 2018-08-13 18:00 Credit Rank Credit Rank Completed
Oktoberfest Challenge PrimeGrid 2018-09-15 18:00 2018-09-22 18:00 Credit Rank Credit Rank Completed
Halloween Challenge PrimeGrid 2018-10-24 23:59 2018-10-31 23:59 Credit Rank Credit Rank Completed
Leonids Shower Challenge PrimeGrid 2018-11-17 12:00 2018-11-20 12:00 Credit Rank Credit Rank Completed
The Winter Solstice Challenge PrimeGrid 2018-12-11 22:23 2018-12-21 22:23 Credit Rank Credit Rank Completed
Conjunction of Venus & Jupiter Challenge PrimeGrid 2019-01-07 05:43 2019-01-22 05:43 Credit Rank Credit Rank Completed
Year of the Pig Challenge PrimeGrid 2019-03-05 18:00 2019-03-10 18:00 Credit Rank Credit Rank Completed
Hans Ivar Riesel's 90th Birthday Challenge PrimeGrid 2019-05-24 00:00 2019-05-31 00:00 Credit Rank Credit Rank Completed
50th Anniversary of the Moon Landing Challenge PrimeGrid 2019-07-15 20:17 2019-07-25 20:17 Credit Rank Credit Rank Completed
Lennart Vogel Honorary Challenge PrimeGrid 2019-08-03 00:00 2019-08-10 00:00 Credit Rank Credit Rank Completed
Oktoberfest Challenge PrimeGrid 2019-09-21 11:00 2019-09-26 11:00 Credit Rank Credit Rank Completed
World Maths Day Challenge PrimeGrid 2019-10-10 18:00 2019-10-15 18:00 Credit Rank Credit Rank Completed
50 years First ARPANET Connection Challenge PrimeGrid 2019-10-24 00:00 2019-10-29 00:00 Credit Rank Credit Rank Completed
Transit of Mercury Across the Sun Challenge PrimeGrid 2019-11-01 18:04 2019-11-11 18:04 Credit Rank Credit Rank Completed
Aussie, Aussie, Aussie! Oi! Oi! Oi! Summer Solstice Challenge PrimeGrid 2019-12-17 04:19 2019-12-22 04:19 Credit Rank Credit Rank Completed
International Education Day Challenge PrimeGrid 2020-01-24 00:00 2020-01-25 00:00 Credit Rank Credit Rank Completed
Year of the Rat Challenge PrimeGrid 2020-03-12 06:00 2020-03-17 06:00 Credit Rank Credit Rank Completed
Sophie Germain's Birthday Challenge PrimeGrid 2020-04-01 12:00 2020-04-04 12:00 Credit Rank Credit Rank Completed
Summer Olympics Challenge PrimeGrid 2020-07-24 20:00 2020-07-31 20:00 Credit Rank Credit Rank Completed
International Bacon Day Challenge PrimeGrid 2020-09-03 00:00 2020-09-06 00:00 Credit Rank Credit Rank Completed
2020 World Expo Challenge PrimeGrid 2020-10-20 06:00 2020-10-25 06:00 Credit Rank Credit Rank Completed
Magellan 500th Anniversary Challenge PrimeGrid 2020-11-18 18:00 2020-05-28 18:00 Credit Rank Credit Rank Completed
Great Conjunction Challenge PrimeGrid 2020-12-21 13:22 2020-12-31 13:22 Credit Rank Credit Rank Completed
Alan Turing's Birthday Challenge PrimeGrid 2020-06-23 22:00 2020-06-26 22:00 Credit Rank Credit Rank Completed
Good Riddance 2020! Challenge PrimeGrid 2021-01-14 00:00 2021-01-19 00:00 Credit Rank Credit Rank Completed
Sier"pi"nski's Birthday Challenge PrimeGrid 2021-03-14 12:00 2021-03-24 12:00 Credit Rank Credit Rank Completed
Yuri's Night Challenge PrimeGrid 2021-04-11 18:00 2021-04-14 18:00 Credit Rank Credit Rank Completed
PrimeGrid's 16th Birthday Challenge PrimeGrid 2021-06-12 13:00 2021-06-17 13:00 Credit Rank Credit Rank Completed
World Emoji Day Challenge PrimeGrid 2021-07-17 22:00 2021-07-20 22:00 Credit Rank Credit Rank Completed
Once In a Blue Moon Challenge PrimeGrid 2021-08-12 20:00 2021-08-22 20:00 Credit Rank Credit Rank Completed
Martin Gardner's Birthday Challenge PrimeGrid 2021-10-21 00:00 2021-10-28 00:00 Credit Rank Credit Rank Completed
Euler's Constant Challenge PrimeGrid 2021-11-23 05:00 2021-11-26 05:00 Credit Rank Credit Rank Completed
Geminids Shower Challenge PrimeGrid 2021-12-07 07:00 2021-12-17 07:00 Credit Rank Credit Rank Completed
Heptadecagenarian Challenge PrimeGrid 2022-01-17 17:17 2022-01-20 17:17 Credit Rank Credit Rank Completed
World Water Day Challenge PrimeGrid 2022-03-21 03:21 1970-01-01 00:00 Credit Rank Credit Rank Completed
Geek Pride Day Challenge PrimeGrid 2022-05-25 18:00 2022-05-30 18:00 Credit Rank Credit Rank Completed
M.C. Escher's Birthday Challenge PrimeGrid 2022-06-17 13:00 2022-06-22 00:00 Credit Rank Credit Rank Completed
Pi Approximation Day Challenge PrimeGrid 2022-07-22 22:00 2022-07-25 22:00 Credit Rank Credit Rank Completed
Riemann's Birthday Challenge PrimeGrid 2022-09-17 20:00 2022-09-20 20:00 Credit Rank Credit Rank Completed
World Space Week Challenge PrimeGrid 2022-10-04 12:00 2022-10-11 12:00 Credit Rank Credit Rank Completed
Prime Meridian Day Challenge PrimeGrid 2022-11-01 05:00 2022-11-11 05:00 Credit Rank Credit Rank Completed
Great Internet Fermat Prime Search Challenge PrimeGrid 2022-12-07 05:00 2022-12-17 05:00 Credit Rank Credit Rank Completed
A Prime Chinese New Year Challenge PrimeGrid 2023-01-22 12:00 2023-01-25 12:00 Credit Rank Credit Rank Completed
International Women's Day Challenge PrimeGrid 2023-03-08 15:00 1970-01-01 00:00 Credit Rank Credit Rank Completed
Gotthold Eisenstein's Birthday Challenge PrimeGrid 2023-04-16 16:00 2023-04-23 16:00 Credit Rank Credit Rank Completed
Blaise Pascal's Birthday Challenge PrimeGrid 2023-06-19 20:00 2023-06-24 20:00 Credit Rank Credit Rank Completed
Math 2.0 Day Challenge PrimeGrid 2023-07-08 21:00 2023-07-15 21:00 Credit Rank Credit Rank Completed
Chant at the Moon Day Challenge PrimeGrid 2023-08-15 02:00 2023-08-18 02:00 Credit Rank Credit Rank Completed
World Peace Day Challenge PrimeGrid 2023-09-13 11:00 2023-09-23 11:00 Credit Rank Credit Rank Completed
Christmas Challenge PrimeGrid 2023-10-31 13:00 2023-11-05 13:00 Credit Rank Credit Rank Completed
Chris Caldwell Honorary Challenge PrimeGrid 2023-12-10 19:00 2023-12-20 19:00 Credit Rank Credit Rank Completed
Hilbert's Birthday Challenge PrimeGrid 2024-01-23 01:00 2024-01-26 01:00 Credit Rank Credit Rank Completed
"Einstein" Anniversary Challenge PrimeGrid 2024-03-20 03:14 2024-03-25 03:14 Credit Rank Credit Rank Completed
JUICE's Birthday Challenge PrimeGrid 2024-04-14 12:14 2024-04-21 12:14 - - - - Upcoming
PrimeGrid's 19th Birthday Challenge PrimeGrid 2024-06-12 19:00 2024-06-19 19:00 - - - - Upcoming
(Tentative) International Cat Day Challenge PrimeGrid 2024-08-08 08:08 2024-08-13 08:08 - - - - Upcoming
Autumnal Equinox Challenge PrimeGrid 2024-09-22 12:44 2024-09-29 12:44 - - - - Upcoming
Cascade Day Challenge PrimeGrid 2024-10-25 06:12 2024-10-30 06:12 - - - - Upcoming
World Kindness Day Challenge PrimeGrid 2024-11-13 07:00 2024-11-20 07:00 - - - - Upcoming
Ada Lovelace's Birthday Challenge PrimeGrid 2024-12-10 18:15 2024-12-20 18:15 - - - - Upcoming