254! = 13140590921305800461383000485312999772637584563104865500301097585436112937395030474531867208340248291212865890660793264493829608374597066104814480522325766324749346393433958125653725607028102944055895649073546925669455844464559611898118678402279915384891280928014302570181589617808257025252685647489863012884041863014084857184237663384079934731712702738308949431076917947473700246530360714416499720082234418835880264436811011656620579173171200000000000000000000000000000000000000000000000000000000000000
* 503 digit