What is Collatz Conjecture?

Collatz is a research project that uses Internet-connected computers to do research in mathematics. You can contribute to our research by running a free program on your computer.

Collatz Conjecture is based in Wood Dale, Illinois. It is a privately managed BOINC project attempting to disprove the Collatz Conjecture. For more information about the Collatz Conjecture, check out the Wikipedia Collatz page. The Collatz Conjecture project makes use of the parity sequence optimization and runs on Linux, Windows, and OS X and can utilize CPUs as well as AMD, nVidia, and Intel graphics cards.

Windows applications require the Microsoft Visual C++ Redistributable for Visual Studio 2017 . It is recommended to install both the x86 and x64 versions since BOINC may decide to run the 32-bit app if no 64-bit workunits are available when requesting work.

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User of the Day

User profile Profile ruidocarmo
I'm a Portuguese Mathematician member of the team Portugal@Home!


Email Fixed
The email connectivity has been fixed.
3 May 2021, 19:21:57 UTC · Discuss

Back Online
We had an extended outage today thanks to Xfinity/Comcast. On the up side, they finished their repair 30 minutes ahead of schedule, but it still took about 4 hours. I don't know if the high winds today had to do with it or not, but everything is working normally again.
29 Oct 2020, 23:40:39 UTC · Discuss

Choose Wisely
I would like to urge participants to switch to Rosetta@Home or Folding@Home (non-BOINC application but also distributed computing) to aid with Coronavirus research until a vaccine has been developed and tested. While it would be nice to solve a decades old mathematical conjecture, it would be better to do research to save lives. Please consider it. Please note that Folding@Home has both CPU and GPU applications.
26 Mar 2020, 3:00:52 UTC · Discuss

New Windows 64-bit version
A new version (1.40) of the Windows 64-bit CPU application has been released.
12 May 2018, 21:09:12 UTC · Discuss

Linux Apps Avaliable
Linux versions of the Collatz Sieve application are now available. This includes 32 and 64 bit versions of the cpu apps, ATI OpenCL, Intel OpenCL, and nVidia OpenCL apps.
7 May 2018, 22:19:23 UTC · Discuss

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