Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 511: | \[{8^{511}-1\over7}\] | 7 × 127 × 337 × 439 × 3943 × 36793 × 2298041 × 15212471 × 9361973132609<13> × 671165898617413417<18> × 4815314615204347717321<22> × 144780974187086260903935034761413745643636578290924150417<57> × 2537599745025519134156761164267591913521835535529224725592538658153<67> × [5804743853065175640230718288033242064835663239961717242531896035922011894221950599145936550228673353306767850557137438080537100938858536905052170542162061530147176211128488702821890907755854593203900521723009958455986273942020462276441523093949017183522367<256>] |