Base 12 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 240: | \[{12^{240}-1\over11}\] | 52 × 7 × 13 × 17 × 19 × 29 × 31 × 41 × 61 × 89 × 97 × 157 × 193 × 233 × 241 × 421 × 521 × 661 × 7681 × 9781 × 19141 × 20593 × 22621 × 35671 × 40609 × 127921 × 260753 × 2227777 × 67657441 × 85403261 × 148589761 × 592734049 × 297499056050881<15> × 186168115009253521<18> × 141841649932724596178535977341201<33> × 34182189107670005092862256297738241<35> × 26431710675263348959866078219391802619508314241<47> |