Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 246: | \[{7^{246}-1\over6}\] | 23 × 3 × 19 × 43 × 83 × 267403 × 4849399 × 8999993 × 20515909 × 395617447 × 1636258751 × 78009515593<11> × 4362139336229068656094783<25> × 116760350377010767475735475438997439954431626395419980541783<60> × 130316122780975961361639346994021774533656192933498430337748067<63> |