That record didn't last long - only 11 days! Congratulations to Alex Kruppa for his new 47 digit factor found of the 1835th Fibonacci number by P-1 with GMP-ECM. Details at: http://www.loria.fr/~zimmerma/records/Pminus1.html It says that the B1 and B2 limits listed there are not necessarily the ones actually used - maybe Alex can tell us what limits he did use.
Phil
Thanks Phil! The limits I used were B1=100M, B2~=20G. Stage 1 took about 20 minutes on a 1GHz Athlon, Stage 2 about 8.5 minutes on a 1.2 GHz Athlon.
Alex
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