Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 395: | \[{8^{395}-1\over7}\] | 31 × 151 × 1423 × 2687 × 12641 × 49297 × 202029703 × 5435488351<10> × 16203007441<11> × 115150116391<12> × 1113491139767<13> × 21792652855138681<17> × 23728823512345609279<20> × 31357373417090093431<20> × 3868132159624916546905272573063237265865977199403213448652782202624081<70> × 47033341043524476217057462384524309924269360489058003489046694415687644576407006664519499040938318231607734253389197842880246651163585290369738773389983211923401<161> |