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Forum: And now for something completely different 2016-05-11, 05:27
Replies: 253
Views: 49,963
Posted By axn
(12^47014-1)^2-2...

(12^47014-1)^2-2 (http://factordb.com/index.php?id=1100000000838567960)

Thanks Serge for the tip!
Forum: And now for something completely different 2016-04-20, 08:55
Replies: 253
Views: 49,963
Posted By axn
Mark, some of the smaller primes seem to be...

Mark, some of the smaller primes seem to be missing from this list (possibly because cksieve sieves them out). I have generated all primes for 6 <= b <= 100, n <= 64 using PARI/GP.

Carol...
Forum: And now for something completely different 2016-04-20, 08:30
Replies: 253
Views: 49,963
Posted By axn
Update on bases 12 and 18

base 12 searched upto 30,000 (continuing to 50,000)
(12^1+1)^2-2
(12^2+1)^2-2
(12^3-1)^2-2
(12^8+1)^2-2
(12^29-1)^2-2
(12^51-1)^2-2
(12^60+1)^2-2
(12^513+1)^2-2
(12^1047+1)^2-2
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