Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 685: | \[{8^{685}-1\over7}\] | 31 × 151 × 823 × 4111 × 119191 × 7084271 × 27261904199932321<17> × 32032215596496435569<20> × 5439042183600204290159<22> × 647923469936355993348337<24> × 83648644144524510111773141111<29> × 508465499861293591585399504034337121<36> × 298291609560028759691116319707152042481<39> × 420802580523767875237950310262820019135749166881960341067173726664556394738285561675988953259150250436976162677581144923361<123> × [2689610136906097926051239926992675489182694527132592122517249542565749013986532729304587428685394022487652442223965738076399319440811448998221093969412408216183096196535118517603246635848924094166566720421812465601696780036570793930104564566752843316025103610558252805037423011957471955721<289>] |