Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 325: | \[{18^{325}-1\over17}\] | 41 × 79 × 521 × 911 × 1951 × 2711 × 602401 × 663001 × 29759719289<11> × 21162386787273369601<20> × 260674349667764744544365521<27> × 7122627224638909118690351246321<31> × [14243920534220041477180563328734708734018218241418183201094420096369803411107575829960240275616929244524501645040278571709020507959089477751027297702841287006346980384079042031038679056811211563524124589487628586855151315789950658336374524523886619466116148465000365720473770696054335801206551<293>] |