Hans Ivar Riesel's 90th Birthday Challenge starts May 24th 2019 00:00 UTC
To celebrate Hans Ivar Riesel's birthday, PrimeGrid is having a 7 day challenge from May 24th 2019, 00:00 UTC until May 31st, 00:00 UTC. Work units from the TRP (LLR) project, which are downloaded and completed during the challenge will count towards your challenge score. Help us celebrate, maybe find a really big prime number eliminating one of the Riesel k's for Riesel's birthday and earn a cool new badge!Best estimate is 30% chance someone finds a prime during the challenge.For more information and discussion, please see the official challenge thread: http://www.primegrid.com/forum_thread.php?id=8556

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