Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 460: | \[{8^{460}-1\over7}\] | 32 × 52 × 11 × 13 × 31 × 41 × 47 × 61 × 139 × 151 × 277 × 331 × 461 × 691 × 1013 × 1321 × 1381 × 1657 × 5981 × 14951 × 30269 × 178481 × 2796203 × 4036961 × 15096281 × 475904041 × 1021622741 × 1884103651 × 7834788541<10> × 124398214921<12> × 168749965921<12> × 2236879829941<13> × 5415624023749<13> × 9426998044141<13> × 10052678938039<14> × 70334392823809<14> × 345767385170491<15> × 2646507710984041<16> × 101545005972588481<18> × 4687500019013509441<19> × 359006912765190408181<21> × 9092066631772024419721<22> × 74078343132499989110265409250618045323263715522281571<53> × 162383614111595675973306320509614573241829932932497191<54> |