Michael Goetz Volunteer moderator Project administrator Send message Joined: 21 Jan 10 Posts: 14037 ID: 53948 Credit: 476,923,882 RAC: 275,501
909548^131072+1 is 781036 digits long and was discovered by Sylvanus Zimmerman of the United States.
This answers the question about whether all of these numbers had been checked before. Are there any more primes to be found before we switch to n=18? We're going to continue searching n=17 up to b=1,300,000.
My lucky number is 75898524288+1
Great find! It is unclear exactly how much of this range was checked before (certainly not double-checked). I hope we do find some more :)
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3073428256125*2^1290000-1 is Prime!