Base 25 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 520: | \[{25^{520}-1\over24}\] | 23 × 11 × 132 × 17 × 41 × 53 × 71 × 131 × 241 × 313 × 521 × 2081 × 5227 × 9161 × 11489 × 18461 × 25601 × 38923 × 51169 × 62401 × 87881 × 14402441 × 247161617 × 305175781 × 484675361 × 632133361 × 825256433 × 1031742401 × 2220784177 × 537181587281<12> × 15188886343541<14> × 31308249137777<14> × 83181652304609<14> × 1034150930241911<16> × 15199221608544481<17> × 20986207825565581<17> × 129044008326199409<18> × 909456847814334401<18> × 4353871187948045921<19> × 889988147002015336570560929<27> × 10371047328004711415976187888122003157511900197790591281<56> × 76676639028844184006008718377454967406853361576121278457944709519246349343012579984382593428234928972925256755874760273452678132321<131> × [186807122152581657557042961412726613052060953212330203449284385055945994770248631022541449811702682317467812462243344291187629425981784753874414137114916254696061532826599367114558760973555873122648344303704792252423565649925121<228>] |