Base 12 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 656: | \[{12^{656}-1\over11}\] | 5 × 13 × 17 × 29 × 83 × 89 × 97 × 233 × 12301 × 31489 × 165313 × 260753 × 519553 × 24621977 × 1684652527 × 1977898057 × 13657436942593<14> × 47936660465075191<17> × 1483560230291988529<19> × 33572162216360702145217<23> × 97668924760419986491370101198871<32> × 18600629401508971409521347691601393<35> × 214533033468609789881587657414964984600266163775345550678274661735237806832526209302641<87> × 1208403955885280967690086396288225815411712619213913958370145270052734167496588351779399449684500778674374077026227091769<121> × [1363120440094606235488291036030390107483473886954178294377496020164136990202347470964332782696042818246956634605426288647315057099279008961287852790323541721971913502031636633667493342538476006652547625268429271275461796561212366035753297844588811588675173954867243991121019948785836322053072250076113<301>] |