Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 645: | \[{8^{645}-1\over7}\] | 31 × 73 × 151 × 431 × 631 × 1721 × 9719 × 23311 × 46441 × 588241 × 2099863 × 11492353 × 731516431 × 4175568751 × 514851898711<12> × 22763003975641<14> × 40375725685111<14> × 1728221461577944661374351<25> × 6834040335349578249140287<25> × 11053036065049294753459639<26> × 83212524822005103181053031<26> × 297927289744047764444862191<27> × 3548950581098263559084652467359<31> × 8510131405590136091948615255367876121<37> × 131731497622810842090670012925784819494618826275411478820176619296690172404590005639309585018242360268704128003435267898171032264520342763282868209937331996785790048085750852924725307107065971023716832118791359843056034093727663939014572644841807970435325201091880617961663315256791311<285> |