Large Factors Found By ECM in 1998 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ This file (champs98.txt) contains information on factors of at least 40 decimal digits found by the elliptic curve factoring method (ECM) during 1998. Compiled by R. P. Brent with assistance from those mentioned below. In 1998 there were 95 factors, summarized in the following table. p40 p41 p42 p43 p44 p45 p46 p47 p48 p49 .. p53 total Brent 1 2 - 2 1 - - - - - - 6 Brown 2 2 - - 1 1 - - - - - 6 Card - - 1 - - - - - - - - 1 Charron - 1 - - - - - - - - - 1 Curry - - 1 - - - - - - - 1 2 Dodson 4 6 2 3 3 1 1 1 1 - - 22 Fleuren - 1 - - - - - - - - - 1 Fossano 1 - - - - - - - - - - 1 Granlund - 2 3 - - - - - - - - 5 Leyland 1 - - - - 1 - - - - - 2 Lygeros & Mizony 2 1 1 - - - - - - - - 4 Macleod - - 1 - 1 - - - - - - 2 Meyrignac - - - 1 1 - - - - - - 2 Montgomery 5 4 1 1 - - 1 - - - - 12 Nokleby - - 1 - - - - - - - - 1 Prestemon - - - 1 - - - - - - - 1 Quercia - - - - - - - - - 1 - 1 Silverman - - 1 - - - - - - - - 1 Ukai 1 - - - - - - - - - - 1 Yamasaki 2 1 - 1 - - - 1 - - - 5 Zimmermann 3 5 4 2 1 2 - - - 1 - 18 Totals 22 25 16 11 8 5 2 2 1 2 1 95 For more details see champs1.txt and champs2.txt; for more recent factors see champs.txt.