Collatz Conjecture sends workunits and receives completed work reports. Collatz Conjecture 0.0 Collatz Conjecture has not been rated by anyone yet! Click here to rate it!

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  • leonashbrook leonashbrook
  • Retired. Living in Austin, TX. Crunching since pre 2002 leonashbrook is from United States
  • fabstar68 fabstar68
  • fabstar68 is from Italy
  • donnastensland1 donnastensland1
  • amasador of peace , mother of four ,wife of 15 yrs and a small business owner. promoter of the disclosure project and supporter of seti and the sirius project. I want to share the knowledge of free energy and a sustainable aggriculture and have our world changed for the better to the ending of fossil fuels usgae on the planet. donnastensland1 is from United States
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RJ45 socket disabled, disconnected from the distributed computing project. RJ45 plug disabled, disconnected from the distributed computing project.

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Total credit:
259,200,056,627
The total credit earned by all the participants of Collatz Conjecture so far.
Total user count:
36,718
The total number of users that have signed up to Collatz Conjecture so far.
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Project description

Collatz Conjecture is a research project that uses Internet-connected computers to do research in mathematics, specifically testing the Collatz Conjecture also known as 3x+1 or HOTPO (half or triple plus one). You can participate by downloading and running a free program on your computer. Collatz Conjecture is based in Wood Dale, Illinois, USA and continues the work of the previous 3x+1@home BOINC project which ended in 2008. It can run on an nVidia GPU, ATI GPU, or CPU.

Recent RSS entries

  • Tip #42: User of the Day
    How can you become the user of the day at ...

    Tip #42: User of the Day

    How can you become the user of the day at your favorite BOINC project? Create or edit your profile. You won't be chosen as user of the day on a BOINC project unless you have a profile. Once selected, you won't be selected again unless you make some type of change to your profile. "There are 9 remaining candidates for User of the Day." That's what the Collatz server is currently telling me. If the BOINC project admin knows a little SQL, he can reset the flag for the user of the day manually, but most won't ever both doing that. So, editing your profile or creating one if you don't have one is the best way to get your name back on the list. In addition to showing your profile on the project home page when you are chosen as "user of the day", there is a site dedicated to tracking it over time much like the BOINC statistics sites track credits. Check it out at http://uotd.org
    Created: April 6, 2014, 3:02 p.m. (modified): April 6, 2014, 3:02 p.m.

  • Server Back Online
    I had intended to get the routine maintenance done prior ...

    Server Back Online

    I had intended to get the routine maintenance done prior to the 2014 BOINC Pentathlon Sprint rather than during it but due to a PBCAK (problem between chair and keyboard also known as operator error) the Collatz server attempted to install software it shouldn't have during the routine scheduled maintenance and there were some nasty unforeseen results. After a kernel panic followed closely by me panicking and multiple attempts at repairing the corrupted libraries without having to re-install the entire operating system, Collatz is now back online.
    Created: May 8, 2014, 2 p.m. (modified): May 8, 2014, 2 p.m.

  • Micro Collatz CPU Apps
    A few people have requested Micro Collatz work units for ...

    Micro Collatz CPU Apps

    A few people have requested Micro Collatz work units for CPUs on Windows and Linux. Because not everyone wants them due to their short duration, I have added logic such that it will send the Micro work units only if the Measured Integer Speed is 4294 million ops/second or less. That number was chosen as it equates to that of a Intel E2160 Core 2 Duo running @ 1.8Ghz which is the slowest CPU I currently own but capable of running the Mini Collatz work units. In other words, it was a somewhat random choice and can be easily changed if the consensus is to make it either larger or smaller. The goal is so that those with older slower CPUs can receive Micro Collatz work units and complete them in a reasonable amount of time while keeping faster CPUs crunching for > 30 minutes. So, please let me know if this change causes any problems.
    Created: May 5, 2014, 12:03 a.m. (modified): May 5, 2014, 12:03 a.m.

  • Up and Running
    Don't blame the cat sitter! The server was online all ...

    Up and Running

    Don't blame the cat sitter! The server was online all last week. It was the firewall that was down. Naturally, I didn't leave directions on how to check that. Regardless of the reason, Collatz is once again available. Before bringing the firewall back online, I ran a query to get the number and type of work units in progress for each host so I can manually grant credit for them if cancelled by the server for being late even if the grace period has not yet passed.
    Created: June 16, 2014, 2:24 p.m. (modified): June 16, 2014, 2:24 p.m.

  • Potential Outage After June 5 thru June 15
    From June 5-15, the temporary Collatz system admin will be ...

    Potential Outage After June 5 thru June 15

    From June 5-15, the temporary Collatz system admin will be the cat sitter. That doesn't sound very reassuring does it? Sorry, but if the server goes down and requires anything other than a simple reboot, there may be an extended outage. Unfortunately, the chances of that happening are higher than normal since Commonwealth Edison (a.k.a. ComEd, the electrical company in the area) failed to notify me on their original attempt to replace my power meter last week but were unable to do so since it evidently takes at least two people to do it. Since they didn't call before the last attempt, Murphy's Law suggests that they will not call before the next attempt and that it will take place while I am on vacation. The cat sitter doesn't know how to switch over to the generator if the outage exceeds the UPS battery so if the power is out for an extended period, Collatz may remain down until I get back.
    Created: May 27, 2014, 2:54 a.m. (modified): May 27, 2014, 2:54 a.m.

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Supported platforms

  • linux-32-bitDistributed computing supported client platform. Linux (32-bit) Collatz Conjecture can run on Linux (32-bit).
  • linux-64-bitDistributed computing supported client platform. Linux (64-bit) Collatz Conjecture can run on Linux (64-bit).
  • mac-os-x-1040Distributed computing supported client platform. Mac OS X (10.4.0+) Collatz Conjecture can run on Mac OS X (10.4.0+).
  • windows-2000xpvista7-32-bitDistributed computing supported client platform. Windows 2000/XP/Vista/7 (32-bit) Collatz Conjecture can run on Windows 2000/XP/Vista/7 (32-bit).
  • windows-2000xpvista7-64-bitDistributed computing supported client platform. Windows 2000/XP/Vista/7 (64-bit) Collatz Conjecture can run on Windows 2000/XP/Vista/7 (64-bit).

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