Date Record Championship
2004-08-28751 digitsWorld Memory Championship 2004
2005-08-131120 digitsWorld Memory Championship 2005
2006-08-19766 digitsWorld Memory Championship 2006
2007-08-31560 digitsWorld Memory Championship 2007
2008-10-24688 digitsWorld Memory Championship 2008
2009-11-12700 digitsWorld Memory Championship 2009
2010-11-03870 digitsWorld Memory Championship 2010
2012-12-141428 digitsWorld Memory Championship 2012
2013-11-301398 digitsWorld Memory Championships 2013
2014-12-141460 digitsWorld Memory Championships 2014
2015-12-16608 digitsWorld Memory Championships 2015
2018-12-141400 digits (e) World Memory Championships 2018 (n)