Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 621: | \[{18^{621}-1\over17}\] | 73 × 47 × 599 × 991 × 4831 × 21529 × 21943 × 23761 × 34327 × 253369 × 1061911 × 1464049 × 3209329 × 4464073 × 7468009 × 131637097 × 29214301092553<14> × 20801237997245359<17> × 237412496364593810296681<24> × 81666738358295147130408618438958417881229024866001<50> × 3335831283765997129468848570484932171598514072932729<52> × 140946324861872125757848531150859837409138117700687286630854927<63> × [35926065790940149719768236719179305798480902028335461691705517468138388022562016989961723726305323003294381829319521165501488409009870749537050360651719544085980090623849801828315365764852995700537025855707140896196548414690256004674711535918096513327823820505752852684497760088220734655257249058268499069163434962494751595919254319451850590120366439363551232209518339280585807564714254748587043738229760372554448014901415944500536659428610722845000355501275524983581874692889770699671<485>] |