Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 455: | \[{8^{455}-1\over7}\] | 7 × 31 × 71 × 79 × 127 × 151 × 337 × 911 × 8191 × 29191 × 106681 × 121369 × 122921 × 152041 × 200201 × 469561 × 108749551 × 112901153 × 23140471537<11> × 145295143558111<15> × 4093204977277417<16> × 52393016292934591<17> × 86977595801949844993<20> × 2224981001722824694441<22> × 134304196845099262572814573351<30> × 4774797453608343803270988984332214098351782527747577456028391624903856636676854631<82> × 2686468892524850657611100670163178394341862986608741637023165267852511115108258469117494403626444218706034120814814814040880969481<130> |