Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 549: | \[{18^{549}-1\over17}\] | 73 × 367 × 991 × 1831 × 34327 × 367831 × 456769 × 5608951 × 4110876980385153863<19> × 964762702193486396463751<24> × 4169249212024569235842583<25> × 4752166733683128861211009<25> × 648170347116311073991134744471511980194247734257<48> × 1450744996988333189921892673782384233809551686747567<52> × 398078235689490288473694047231212726626520443743832996538897962223<66> × [37758833299984716008968144184212750339832628228003942820372762937730344178259572279363139293803855474185737442636703524021583612593580658184950034085685138740443914446838690009809237880038925471037215149651396104308532241604800764467666369428808088770210947774600156792140195571838049661015731523157521379836470442854962966340156888663019442039205888292797391429276827561130839335184606727062687231<398>] |