Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 312: | \[{5^{312}-1\over4}\] | 23 × 32 × 7 × 132 × 31 × 53 × 79 × 157 × 313 × 601 × 3121 × 5227 × 38923 × 51169 × 390001 × 8684521 × 305175781 × 4056854881 × 537181587281<12> × 22735632934561<14> × 83181652304609<14> × 608459012088799<15> × 667929705480493<15> × 129044008326199409<18> × 319143533738738955692755921<27> × 39612174255353889351610675873223022522481<41> |