Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 390: | \[{7^{390}-1\over6}\] | 23 × 3 × 11 × 19 × 31 × 43 × 53 × 79 × 131 × 191 × 2801 × 157951 × 159871 × 486643 × 787021 × 1175071 × 1232401 × 6568801 × 7524739 × 23850061 × 44975113 × 118177021 × 228511817 × 567538141 × 14046059431<11> × 16148168401<11> × 115868130379<12> × 4446437759531<13> × 434502978835771<15> × 35695043869049049222174543845808031<35> × 196569087309473486919368024394634095901450148683467001720304131<63> × 8117550070251018659509645636123697053284842343085479331720905704581<67> |