Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 437: | \[{8^{437}-1\over7}\] | 47 × 23599 × 32377 × 178481 × 524287 × 1212847 × 3198841 × 5579617 × 10052678938039<14> × 6203145044672921<16> × 728853407707467208421993458966504139019157860437186335406130262344738292438484569798131887<90> × 463047983980413430334860907450298517610234647462968200247768280368542511482597295122309061900337<96> × 4171326038771226533688924879622055675836954208039765124706405538668168425592408338898088687263334159718468123862658977708335816351527093497<139> |