Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 665: | \[{18^{665}-1\over17}\] | 41 × 71 × 191 × 449 × 2711 × 6841 × 80207 × 204023 × 4274201 × 13828961 × 22647241 × 49070090119<11> × 6089884909802812423<19> × 3522349102008270555071<22> × 4164889456901862302881<22> × 460137572778371557785054623257871<33> × 1862457611364175487570409238012726994823669889631<49> × 4387966312585055506457903642949218117592894048635384330976913719069934194657675119164757257<91> × 200699161385050848967228519218093632711060581827431130521255634797952099744280435462601768283357336438346310156159419839853523475989258326088200947190100186200649030589761067559831492949770801408805737954937644839135777053538711680286899429907439141188928490284420615962868542622871760213151795533635373359561213551327901768946490593802781482839647471597360363937337996229903666451711094353119393500930766713145029724300217048638088442391264756684470542987251691539321171124796216486145874012438847323933412548345052323544885990187775857727151<543> |