Date Record Championship
2005-08-13200 digitsWorld Memory Championship 2005
2007-08-31440 digitsWorld Memory Championship 2007
2008-10-241000 digitsWorld Memory Championship 2008
2009-11-12700 digitsWorld Memory Championship 2009
2010-11-03709 digitsWorld Memory Championship 2010
2012-12-14583 digitsWorld Memory Championship 2012
2013-11-30903 digitsWorld Memory Championships 2013
2015-12-16875 digitsWorld Memory Championships 2015
2018-12-14813 digits (e) World Memory Championships 2018 (n)