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SETI@home: News

SRBase: News

  • base R951 proven / Megaprime

    Posted: May 25, 2019, 10:50am CEST
    On 04th of May, whizbang, a member of the team Ars Technica found the last prime for base R951.
    The prime 38*875^256892-1 has 1.107.391 digits and entered the TOP5000 in Chris Caldwell's The Largest Known Primes Database.


  • Hans Ivar Riesel's 90th Birthday Challenge starts May 24th 2019 00:00 UTC

    Posted: May 23, 2019, 11:29am CEST
    To celebrate Hans Ivar Riesel's birthday, PrimeGrid is having a 7 day challenge from May 24th 2019, 00:00 UTC until May 31st, 00:00 UTC. Work units from the TRP (LLR) project, which are downloaded and completed during the challenge will count towards your challenge score. Help us celebrate, maybe find a really big prime number eliminating one of the Riesel k's for Riesel's birthday and earn a cool new badge! Best estimate is 30% chance someone finds a prime during the challenge. For more information and discussion, please see the official challenge thread: []


  • Problems with Receiving Email for Resetting Passwords

    Posted: May 22, 2019, 6:49pm CEST
    Hello all,

    It has come to my attention that there are some people who are having trouble resetting their passwords. More specifically when requesting a link to reset their password, the email with the link to change their password never arrives in their inbox or spam. At the moment, I have been able to reproduce this problem with gmail accounts and some temporary email accounts. So far, I've only been able to get my university email account to receive a password reset link. While I will continue to troubleshoot this issue, I humbly request help in this matter. If you could request a password change and tell me whether or not you receive an email with the password reset link, as well as what email type you are using (gmail, hotmail, yahoo, edu, etc.), it will help me immensely with identifying the root of this problem. I am not asking for you to change your password; I only need to know if the email arrives.
    Thank you in advance for your assistance in this matter.

    -Eric Mendelsohn


  • AVX-512 Now Supported by LLR

    Posted: May 22, 2019, 2:22am CEST
    All of PrimeGrid's LLR applications now support AVX-512 on CPUs with that capability. Those of you that have been using app_info.xml/anonymous platform to run LLR 3.8.23 may now use the stock app if you wish, which is also LLR 3.8.23. UPDATE May 22nd: It has come to my attention that while CPUs with 2 AVX-512 execution units gain a substantial boost in performance, mid-range CPUs with only 1 AVX-512 execution unit may see a significant decrease in performance with the new LLR app. Obviously, this is not intended. For the time being there is no workaround for this. If you have a CPU that supports AVX-512, but has only a single AVX-512 execution unit, you may want to use the anonymous platform mechanism (app_info.xml) to run the older version of LLR. With a challenge starting tomorrow, we won't make changes to the app until at least a week. We apologize for any inconvenience this may cause. UPDATE May 23rd: I've included a list of single and dual unit AVX-512 CPUs here.

SRBase: News

  • base R875 proven

    Posted: May 19, 2019, 4:49pm CEST
    On 22th of April, whizbang, a member of the team Ars Technica found the last prime for base R875.
    The prime 38*875^256892-1 has 755780 digits and entered the TOP5000 in Chris Caldwell's The Largest Known Primes Database.

WEP-M+2 Project

ОДЛК: News

  • С Днём Рождения, проект!

    Posted: May 19, 2019, 4:06am CEST
    BOINC-проекту ODLK 2 года!

    Всем, всем, всем поздравления!

    За 2 года в проекте найдено примерно около миллиона уникальных КФ ОДЛК.
    Есть точные данные по проекту ODLK за период с мая по декабрь 2018 года.
    За этот период найдено 385041 уникальных КФ ОДЛК.
    До мая 2018 г. велась общая БД КФ ОДЛК – для проектов ODLK и ODLK1.
    С января по апрель 2019 г. результаты проекта ещё не обработаны.

    Спасибо всем участникам проекта!
    Особенно хочется поблагодарить тех участников, кто постоянно поддерживает проект.

    Поблагодарим все вместе нашего уважаемого администратора Progger!
    Благодаря его усилиям проект нормально работает, почти без сбоев.

    У проекта есть проблемы, но мы идём вперёд.

SETI@home: News

  • 20 years and counting!

    Posted: May 17, 2019, 7:39pm CEST
    Happy Anniversary! On this date in 1999, SETI@home came online. Since then millions of our volunteers have helped us sift through petabytes of data from multiple radio telescopes. ET still hasn't shown up to the party.

    We're not discouraged. We're able to examine less than a tenth of a percent of the radio spectrum, over only 1/3 of the sky and a limited number of additional stars. But our capabilities are increasing every day. In 1999 it took up to a week to process a single workunit on a home PC. Now, on a machine with a GPU, it might only take a few minutes to do a far more detailed and more sensitive analysis. Who knows what the next 20 years will bring?


  • New acemd

    Posted: May 16, 2019, 5:49pm CEST
    HI, we are testing a new application that will provide Turing support based on the new application acemd v3. For now we have deprecated the linux version of v2 and we will soon release v3 for linux using a boinc wrapper. If the boinc wrapper works, then it should be easy because the application works by itself and it has been tested extensively. gdf



  • 495 new structures

    Posted: May 11, 2019, 8:20pm CEST
    New COD entries are added.

    Update. All WUs are sent to the hosts.

SETI@home: News

Universe@Home: News

  • Emission from ULXs

    Posted: May 10, 2019, 6:05am CEST
    After a series of papers on gravitational wave sources, we published results concerning ultra-luminous X-ray sources. In the paper we analyse the anisotropic emission of radiation from these sources and show that the actual population of ultra-luminous X-ray sources differs from the observed one. Particularly, in flux limited surveys, the observed population will be highly biased toward black hole accretors, whereas neutron star accretors dominate volume-limited observations.

    The work can be found here [https:]]


  • Reason you should upgrade BOINC

    Posted: May 8, 2019, 3:03pm CEST
    "If it ain't broke, don't fix it" isn't a terrible rule of thumb, but not in this case. We've just updated most of PrimeGrid's apps, but to take advantage of them you'll need to be running a version of BOINC that isn't too ancient. On the apps that use wrappers (currently all of the LLR apps and 321-Sieve) the priority of the wrapper is increased above idle priority. This may help avoid some infrequent crashes attributed to the wrapper. You'll need at least BOINC 7.4.0+ (first released in 2014) to take advantage of this feature. The LLR apps are already updated, and 321-Sieve will be updated in the near future. All of the binary files will now be sent gzipped, which will reduce data transfer by about 50%. You'll need at least BOINC 7.0.0+ (first released in 2012) to take advantage of this feature. If you're running a really old version of BOINC, you now have a reason to upgrade! EDIT: There's been some confusion about how version numbers work. 7.14.2, released in October 2018, is the most recent version of BOINC as of right now, and is what you should be running. "14" comes after "4". 7.14.x is new, 7.4.x is quite old, and 7.0.x is even older!


  • BOINC Pentathlon

    Posted: May 7, 2019, 7:48pm CEST
    Welcome BOINC Pentathlon participants. Note that if you haven't participated in NFS@Home recently and are having trouble queuing work, then complete a few workunits and send them back. The server doesn't send much work to machines that haven't returned any recently.


  • Welcome Penta Racing Teams

    Posted: May 6, 2019, 12:00am CEST
    Our small server heavily fights with all flushed buffers, especially at the beginning. We did some measures to handle the load. But if many buffers will be flushed at the same time, the transitioner will need time to handle all. In the ECM project a 63 digit prime as a factor of a CullenWoodall number was found, which will make it into the gmp-ecm Top 10 list for this year. Have fun and take more of the ECM P2 workunits! yoyo

SETI@home: News


  • New SR5 Mega Prime!

    Posted: April 28, 2019, 6:50am CEST
    On 26 April 2019, 13:27:42 UTC, PrimeGrid’s Sierpiński/Riesel Base 5 Problem project eliminated k=138514 by finding the mega prime: 138514*5^2771922+1 The prime is 1,937,496 digits long and enters Chris Caldwell's “The Largest Known Primes Database” ranked 63rd overall and is the largest known base 5 prime. 31 k’s now remain in the Sierpiński Base 5 problem. The discovery was made by Ken Ito (jpldcon4) of Japan using an Intel(R) Core(TM) i9-9820X CPU @ 3.30GHz with 32 GB of RAM, running Microsoft Windows 10 Professional x64 Edition. This computer took 2 hours and 46 minutes to complete the primality test using multithreaded LLR. Ken is a member of Team 2ch. The prime was verified on 27 April 2019, 07:28:26 UTC by Dmitry Domanov (unconnected) of Russia using an Intel(R) Core(TM) i5-2310 CPU @ 2.90GHz with 3 GB of RAM, running Microsoft Windows XP Professional x86 Edition. This computer took about 23 hours and 24 minutes to complete the primality test using LLR. Dmitry is a member of the Russia team. For more details, please see the official announcement.