Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 494: | \[{13^{494}-1\over12}\] | 2 × 7 × 53 × 1483 × 4447 × 6917 × 13417 × 20333 × 79301 × 264031 × 1803647 × 12865927 × 33786637 × 397935773 × 5898195459469<13> × 9468940004449<13> × 1644445565188037<16> × 104422877883960436477<21> × 408189660586084149333723969054793014325764402326782124910797220743815799771587452032478319<90> × 618771507742258775366473692972132219692788702409680206332068085521346010388906443755768680888015129916707<105> × [11069698674781746662462084908050409509114688991268978131063769468909200939354068256534839376969725706858810284052964057108290234616461140953100038309066446636327775595749533224158034984887122403409384156482287873456054718299224080677<233>] |