Base 22 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 390: | \[{22^{390}-1\over21}\] | 3 × 133 × 23 × 31 × 61 × 79 × 131 × 463 × 521 × 2003 × 224071 × 245411 × 330331 × 1283881 × 1421317 × 3702791 × 858794191 × 1850478481 × 21821513533<11> × 85107437663<11> × 37987538607331<14> × 59512246816751<14> × 736268258070931<15> × 1169669660009891<16> × 3198633375097421<16> × 6165936796469347<16> × 12296089473177511<17> × 8537828742536325458236531<25> × 845519607896833262105301031<27> × 1246501206961265681019957871<28> × 355620433409563312682671944511<30> × 5886668133538487187071248988929531<34> × 1641158376222530308573224428402361148531<40> × 506812753601212314821732388811913863144123442922181<51> × 434672914292057000519918059621079826241794891296647508962013384789217357305530465496638741<90> |