Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 666: | \[{7^{666}-1\over6}\] | 23 × 32 × 19 × 372 × 43 × 149 × 223 × 1063 × 1999 × 2887 × 6217 × 33301 × 117307 × 177379 × 15015834247<11> × 25443079695091<14> × 12558090335903767<17> × 1670104932753491929339<22> × 56713875643149053038693<23> × 4805345109492315767981401<25> × 15572244900182528777225808449<29> × 96651302095748872822763048599<29> × 1294285248964974863021909311067422276786354955064661561483669329671165989<73> × 217380027358189784019728120583833263965409777805477017160436666496373078945737096156202044671136623659557<105> × 174432803443638993927669437262528164481513250204644557492237280593110475556560907733055556994135557673189869695497386189140281161341691065773704234796824812322002221658442544105999<180> |