Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 645: | \[{19^{645}-1\over18}\] | 3 × 31 × 127 × 151 × 211 × 431 × 911 × 1033 × 1291 × 784321 × 2460181 × 2412306451 × 775676906583182411<18> × 18917672548149688895557513<26> × 28461948730641665973894996037<29> × 34767827087100028553832142305855172668641<41> × 36345637656251647357558267023272022549061<41> × 5086345414649205177826740885686300803862976717463015661252167<61> × 9356125872032561161065854130013550419006958087411959344817263774091<67> × 589783071143701597015505434603593565781950199942595467097772380090363403209256753576151<87> × [2556826135811730249430365907680102733176337590001445075778931462791371580327640698544127877694789654071899991051305879565829553325807238922742334369882536744246677071705170682321713070466809340366152237004044471449592810212262733354611128477567288478478963136390744915297920670196742703113729968290476266357520124361754679919018421478382545706394634420781265422372365262732653079093173531781364573520437419057526971<415>] |