No             n          digits         Searcher 
1	      518	      593	
2	   33,416	   68,333	 Steven Harvey p15 12/2002
3	   37,310	   77,189	 Steven Harvey p119 01/2003
4	   52,608	  112,762	 Ken Davis p104 11/2003
5	  123,998	  288,864	 Sou Fukui 05/2015
6	  220,502	  541,239	 Sou Fukui 01/2017