Even though we use the PRP method of Primality testing we use the LLR software because of its easy to use features. Make sure you have read the Getting Started Thread before reading this page.

This project uses llr wrapped in PRPNet. You will find the current version in the PRPNet thread in our forums.

• Download the version that matches your operating system and unzip to a folder on your computer.
• Enter the prpclient folder.
• Please refer to the PRP stats to make sure you choose a username that's not already taken.
• Open the "master_prpclient.ini". If you're using Notepad and it looks funny, open it in wordpad or a proper editor instead.
• Configure the parameters email, userid and client_ID
  email: your email address.
  userid: the username you chose for this project.
  client_ID: if you're using more than one computer, please set this to something unique for each computer.
• Run the install.bat that matches your number of cores, followed by the update.bat and finally the start.bat.

PRPNet will open a window for each core and you're participating. If you've stopped the llr processes for some reason, these can be resumed by running the correct start.bat again.

PS: The TCP ports 7100 (first pass tests) and 7101 (second pass tests) need to be open for outbound connections for PRPNet to be able to download and upload workunits.

Please browse to the Manual reservation thread. If you're not already registerred at mersenneforum.org, you'll have to do so.

• Download the preferred version of llr from the bottom of the first post.
• Then find a range that is not reserved and claim it by making a post similar to:
  6286000.txt 15 candidates reserved
• Download the corresponding file and save in the same folder as you saved llr
• Start llr. In windows it will look like this:
  
  Note that the icon is red right now
• Click on Test menu and then Input data. (Test » Input data)
  The screen looks likes this:
  
• Enter the name of the file reserved, 1028000.txt in the input box and in the output file put primes.log. All primes found are reported in primes.log.
• Hit OK, the icon changes to green and the computer starts going work.

When the icon changes back to red you are out of work. Submit your results by sending the contents of your primes.log in a PM to ltd. Or you can send him a PM and ask for his email address.

Now, go back to the Manual reservation thread and post a message similar to:
sl7200000.txt completed

If you want another range, you can reserve a new one in the same post.