From September 15th, 2018 Primegrid will be running a Cullen Challenge to celebrate Oktoberfest! The wold's biggest Volkfest is held annually in Munich, Bavaria, Germany, with more than six million people from around the world attending.
The 7 day Challenge starts at 18:00 UTC and ends on 22nd September exactly one week later at 18:00 UTC. Work units from the CUL (LLR) project, which are downloaded and completed during the challenge will count towards your challenge score.
The last Cullen Prime found was 6679881*2^6679881+1 from 2009. We're now testing numbers past 16M, so emotionally due for a prime.
For more information and discussion, please head over to the official challenge thread: http://www.primegrid.com/forum_thread.php?id=8194