Base 25 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 390: | \[{25^{390}-1\over24}\] | 2 × 3 × 7 × 11 × 132 × 31 × 41 × 53 × 61 × 71 × 79 × 131 × 157 × 181 × 521 × 601 × 1741 × 2281 × 3121 × 5227 × 7621 × 9161 × 14821 × 18461 × 38923 × 87881 × 8684521 × 14402441 × 69566521 × 305175781 × 933692761 × 4056854881 × 15188886343541<14> × 22735632934561<14> × 83181652304609<14> × 608459012088799<15> × 667929705480493<15> × 1034150930241911<16> × 14011933046202781<17> × 15199221608544481<17> × 20986207825565581<17> × 1755692053873139750161<22> × 13139700116898999203751361<26> × 86047082949427536089202802741<29> × 431114130336966439253639900581<30> × 106819198985704526442073820024512172507707681<45> × 10371047328004711415976187888122003157511900197790591281<56> × 1434121724520982424909664814056641660699632750456603894247357462095700708417050660312660321<91> |