The fifth challenge of the 2023 Series will be a 7-day challenge celebrating Math 2.0 day. The challenge will be offered on the CW-Sieve application, beginning 08 July 21:00 UTC and ending 15 July 21:00 UTC. To participate in the Challenge, please select only the CW-Sieve project in your PrimeGrid preferences section. Join the discussion at https://www.primegrid.com/forum_thread.php?id=10277

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