Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 219: | \[{8^{219}-1\over7}\] | 732 × 439 × 3943 × 2298041 × 10178663167<11> × 27265714183<11> × 9361973132609<13> × 5271393791658529<16> × 671165898617413417<18> × 2762194134676763431<19> × 4815314615204347717321<22> × 42185927552983763147431373719<29> × 781335393705318202869110024684359759405179097<45> |