Base 25 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 218: | \[{25^{218}-1\over24}\] | 2 × 13 × 1091 × 19403 × 1007161 × 1528399 × 938804357 × 36987176266711133<17> × 43330701999236285089<20> × 4046322895447485867367<22> × 89818280744210450462726655090961<32> × 32707684672709516281678338357373622217207225350621<50> × 2293559892404294400692399012979688850301546383400890423075969<61> × 67561745444007943379840300576339494809849148808966563919486171726828018449<74> |