Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 605: | \[{18^{605}-1\over17}\] | 23 × 41 × 199 × 727 × 2711 × 3631 × 16127 × 51217 × 91961 × 103577 × 586367 × 50790191 × 97888065881<11> × 125500908706801<15> × 6196972723638146528849983081<28> × 24079647987394646183428194161<29> × 27227533543753365982438399708085484080831743771008849850932265278999273377354114546362618762214332158687286162186495539771649<125> × [10312476672343283600265813671374981106887248498968488131497437368986574935006223268754280687725653056286760866927437561960583190705576360143019793719030942263228407489224858522854642222435739907761816331107576993720012716825047996227215220710185707500666422887630621666576198767808016158309377752964874871556211874361297573450294004250285177882947382850074904392570105181345647073157573791908458206175457125847932837083883945320769417199562967381000898902562716117310144976739524036945893327233399497412551<506>] |