Since the demise of the original Prime Sierpinski Project (PSP) two years ago, PrimeGrid has been continuing its own work on PSP. The time has come to double check all of the PSP tasks done external to PrimeGrid. All of our own PSP tasks are already double checked.The double check tasks are a lot smaller than the normal PSP tasks, but there's a lot of work to be done. If you have some spare computing power and would like to contribute, you may do so by selecting "Prime Sierpinski Project LLR (PSP)' on the PrimeGrid preferences page. This is a CPU-only project. More details and discussion can be found in this thread: http://www.primegrid.com/forum_thread.php?id=7093

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