Base 14 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 447: | \[{14^{447}-1\over13}\] | 211 × 73309 × 1681675687 × 2921184325571<13> × 3614646313204739<16> × 86461323974510452851899<23> × 228244140664914750261374020933064642837<39> × 2986278991268085193064870582479240386606976549239773286954065465212422950617<76> × [991128424572071404306733019051717003524663736408544798792695665062094966594383257703755394197111668691500090104941008595280186042239703314132501036027006858094549212638517875306080415428153153288291341832232493068798208097947871722504178399285439864220849436358564437499133741889778648545277309582176245252989790739327000040935213<330>] |