The fourth challenge of the 2023 Series will be a 5-day challenge celebrating the 400th birthday of French Renaissance philosopher and mathematician Blaise Pascal. The challenge will be offered on the 321-LLR application, beginning 19 June 20:00 UTC and ending 24 June 20:00 UTC. To participate in the Challenge, please select only the 321 Prime Search (LLR) project in your PrimeGrid preferences section. Insights? Intimations? Introspections? Intuitions? Join the discussion at https://www.primegrid.com/forum_thread.php?id=10261

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