Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 418: | \[{28^{418}-1\over27}\] | 232 × 29 × 419 × 60611 × 6077039 × 21084187 × 50545507 × 540610746853<12> × 5504044949138999959<19> × 108044981035496842464510517<27> × 11691921803678955385540384142557677518869273030137458638062733600245048686691107425373823176122666959336597090058506020882794926475042136858114545369739561383365741797846118616165250742859632407873323959196496976658402412866377244430569205596066098170461<254> × [318922829231565943030675108461054836931093807652212983944397619656375925814560337276065025713145346602912236648878056802528899943692863725961547954447822993116350024360405630243654542734757178094029617860837386707736414475869850916009967372548758736718759198749<261>] |