Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 680: | \[{13^{680}-1\over12}\] | 23 × 52 × 7 × 11 × 172 × 41 × 103 × 137 × 409 × 421 × 443 × 601 × 641 × 1021 × 1361 × 2411 × 6121 × 14281 × 29881 × 30941 × 48281 × 897329 × 3553001 × 28152511 × 61165661 × 63104137 × 75094577 × 4246832221 × 6152936617<10> × 543124566401<12> × 4618988261621<13> × 15798461357509<14> × 617886851384381281<18> × 130262335782633067441<21> × 11435433293542010176161611<26> × 562139171639747303605338416886252422621<39> × 55444393239496164406865681531894115168657269299195964355161<59> × 155131480113286544910362313013914659595553405623716429649731788544561<69> × 88208188245827445083914370058081232147826361512673071997162234067556045850948658225373201<89> × [241374294071276063841878407612514355887067298699734766570211680712064109814203384604865042109885400661640622717829950208171415641869801325144009689374070563477474733038994317533571439842926804607671059788990675020639532053228407292175301472424762618789402617259081438076023187251801<282>] |