Base 12 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 208: | \[{12^{208}-1\over11}\] | 5 × 132 × 17 × 29 × 53 × 79 × 89 × 97 × 233 × 677 × 36037 × 222379 × 260753 × 288913 × 477517 × 3946177 × 20369233 × 25265657 × 235590161 × 2200289654266792155913<22> × 865727447657645665290857439836665912121<39> × 2394253229201412644716539488455823024969393<43> × 17943031838823581369605788619131951827982960001<47> |