Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 831: | \[{8^{831}-1\over7}\] | 73 × 1663 × 1121297 × 12863881 × 3772542223 × 502746492223<12> × 660284006953<12> × 679758314119<12> × 11534250974833<14> × 31133636305610209482201109050392404721<38> × 6955979459776540052280934851589652278783<40> × 5950573776337857083075874442067543579480302367010830438026343467540674188668607309648191584891661956885759297060111559<118> × [18930780611919238634421697498677009098631116222146373022944194458077076621981011849947777862831412838285730716724788915843078503357179761082294047791638203878792012455336968869067456425870663303706840047001469649862702080792233686231072869427201728799106896928696837309024590840056630451573025385209364341539742410486447631522870851606675710394061162314059713039419919217151236064347076838120025622459155144986167901403906587305876866940909055455608838344106533725989734784189057<479>] |