Friday, June 6th, 2008. A new page, Primes and PRPs of the form xy + yx, http://xyyxf.at.tut.by/primes.html#0
, appeared on our site. These tables were originally maintained by Paul Leyland, http://www.leyland.vispa.com/numth/primes/xyyx.htm
, but became outdated with time, so there's a new version, somehow revised and supplemented with the latest results.
Thursday, May 29th, 2008. Our newcomer, Serge Batalov, raised the ECM record, http://xyyxf.at.tut.by/records.html#ecm
, up to 56 digits, http://xyyxf.at.tut.by/records/p56_114_103.txt
, completing the factorization of 114^103 + 103^114. Congratulations Serge!