CEMPLLA version 1.5 has just been released.
CEMPLLA, an acronym for “CUDA-Enabled Mersenne Prime Lucas-Lehmer Assessment”, is a completely free, full-featured set of programs that work together to enable participants the opportunity to make history, and possibly win a substantial sum of money at the same time, by helping to discover the largest prime numbers ever recorded in history.
The thrust of the CEMPLLA effort is to win either or both of the two monetary awards currently being offered by the Electronic Freedom Foundation (the “EFF”); namely, the award for the discovery of the first one billion decimal digit prime number ($250,000), and the award for the discovery of the first one hundred million decimal digit prime number ($150,000). CEMPLLA participants who discover either of these stand to win a substantial percentage of the EFF’s monetary award for their efforts (details are fully explained in CEMPLLA’s documentation).
CEMPLLA is very easy to use, and is currently the only software in the world capable of discovering the first one billion decimal digit prime number. And it’s one of only two in the world capable of discovering the first one hundred million decimal digit prime number.
CEMPLLA works exclusively with NVidia brand GPU equipment to achieve its goals, so you must have at least one NVidia brand GPU installed on your machine(s) to use the software. However, because the goal of the CEMPLLA system is so computationally intensive, as a general rule you should have more than just one GPU board installed on your system to get any meaningful results.
Also, it only runs on Microsoft Windows 64-bit operating systems.
All of the details pertaining to what CEMPLLA is, does, and is trying to accomplish are contained in the CEMPLLA Install program’s extensive pop-up documentation. But you don’t have to install CEMPLLA to read any of it; installation is completely optional. And of course, if you do decide to install it, then decide later that it’s not for you, you can completely remove it at any time by using Control Panel’s “Programs and Features”.
The significant differences from earlier versions are as follows:
- The minimum number of NVidia GPUs required to install CEMPLLA are now: 1
- CEMPLLA no longer uses the Internet, so no Internet connection is required.
- Documentation has been expanded and revised.
- The “MPCG” trial factoring component has been completely removed.
- A utility to control the Windows “GPU TDR” feature has been added.
- CEMPLLA now creates an encrypted “log” file that chronicles the entire LLT.
- A utility for viewing the contents of the aforementioned “log” file was added.
- Myriad bug fixes were made, too numerous to enumerate.
- Added some limited networking support (for group efforts).
To download CEMPLLA v1.5 (free of charge or obligation), go to: