Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 228: | \[{28^{228}-1\over27}\] | 3 × 5 × 13 × 29 × 157 × 229 × 271 × 457 × 757 × 15277 × 47221 × 90403 × 7508041 × 10653073 × 21084187 × 4295845129<10> × 47560093775549<14> × 62830837877749<14> × 5504044949138999959<19> × 5746048837796495176973<22> × 108044981035496842464510517<27> × 4652032620781659567810280156291<31> × 44759782454592457409650649228382743175133<41> × 1727359273758244662980578809730277978223143029<46> × 1002698399599141636338927096403051600190795265683440131589<58> |