PrimeGrid: PrimeGrid's Happy New Year's Challenge!

At the stroke of midnight (UTC) on New Year's day, PrimeGrid is starting off our 2018 Challenge series with our Seventeen or Bust Happy New Year's Challenge! This 15 day challenge is intended to speed up our ongoing double check of older SoB tests that were never checked to see if the initial results were correct. Could there be a missed prime in there somewhere? It's certainly possible -- two of the 12 primes found so far in the SoB effort were in fact discovered during previous double check efforts. Help us celebrate the new year, and maybe find a really, really big prime number as well as eliminating one of the five remaining k's in the Sierpinski Problem. For more information and discussion, please see the official challenge thread: http://www.primegrid.com/forum_thread.php?id=7767

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