Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 285: | \[{28^{285}-1\over27}\] | 3 × 31 × 271 × 457 × 15991 × 71821 × 90403 × 230281 × 637421 × 734941 × 6790411 × 21084187 × 124879021 × 62830837877749<14> × 5504044949138999959<19> × 18876519380766175812534662561<29> × 4652032620781659567810280156291<31> × 8010545589178234338619518726411686560584870675847476297867777517585821214661<76> × [1818175786275335799477895411496332871892304223141265766131859584521727206428877133348958759380740418419059144231439804063660645784506696645975549890860074156593142014529311980228531511<184>] |