Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 222: | \[{7^{222}-1\over6}\] | 23 × 3 × 19 × 43 × 149 × 223 × 2887 × 6217 × 177379 × 15015834247<11> × 25443079695091<14> × 12558090335903767<17> × 1670104932753491929339<22> × 56713875643149053038693<23> × 4805345109492315767981401<25> × 15572244900182528777225808449<29> × 96651302095748872822763048599<29> |