Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 620: | \[{18^{620}-1\over17}\] | 53 × 11 × 13 × 19 × 41 × 311 × 373 × 1427 × 2711 × 8681 × 9041 × 12959 × 15101 × 19531 × 70619 × 145501 × 316201 × 1158037 × 7069861 × 19916261 × 89891941 × 466062991 × 1107229481 × 10658588641<11> × 1276827537047<13> × 9365578696924149281<19> × 844025609171791028413<21> × 984938339908206953441<21> × 427906142457974033788659934939<30> × 389956285472404466216396909939467861<36> × 63023759457096932797215924793101340357<38> × 1216473020300826022855249568544847446401<40> × 121472792386980744245361842317105955493525848521<48> × 4069317457763949581396117495290099929231469953601<49> × 9247382877597323345637535904244018027723749841813455876927461<61> × 6105344706161177496018405856657758633903569370324868785524181487043204770666481<79> × 22303638513228233176242733938336258106971436723822084073213882019615133607531455601<83> × 28113014110683210671340343304604298171782862692422742775798318629030776153922686103034236339145987455098566379757189621570998999979101<134> |