Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 430: | \[{7^{430}-1\over6}\] | 23 × 11 × 191 × 431 × 947 × 2801 × 19867 × 20899 × 31391 × 41281 × 163573 × 235211 × 822161 × 3799051 × 4749781 × 4674932375366381<16> × 166003607842448777<18> × 2192537062271178641<19> × 11300176322829911971<20> × 147795410845880963171<21> × 13470457618790060895951151<26> × 11916717598664539151308306888803765941891<41> × 40183448134459496127723158417549037223081<41> × 15808291449184578466328984491788528176755903275531421<53> × 240438753105947043637228033025129686517423527984261981<54> |