Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 527: | \[{18^{527}-1\over17}\] | 17 × 311 × 12959 × 320417 × 1276827537047<13> × 1285202303890457<16> × 7563707819165039903<19> × 8001433967808159583<19> × 9365578696924149281<19> × [97302499156863660544987939319535412825732189322167101851814149566011841173086931175040232683509196200940730945840459633073737743831213907443763445887054582930051578743745661090114266872037935052762068201818152510975353021163897218984664517471866634103941760509888700736646799657565552585079904362430584164553659454566467361244760547593950626788278396821657328203862358941011304102505057506559017787490989369244865442992451136937861113389150890980171625333628195781028660304168538252512532399055897098476017006925533490302245923399407762826552592085974549547451513<563>] |