Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 410: | \[{7^{410}-1\over6}\] | 23 × 11 × 83 × 191 × 821 × 2801 × 4849399 × 8999993 × 20515909 × 1636258751 × 78009515593<11> × 982435845672451<15> × 4362139336229068656094783<25> × 834035491628067397615971778938263976927180494349982302975033997201<66> × 1688810503833393229216027790837197173108510442605439879635226377154801<70> × 2328118880229512093084878815421835177093875139973790617223638838685322251270524044545915696799343802792295106371601631<118> |