Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 428: | \[{7^{428}-1\over6}\] | 24 × 52 × 1499 × 5606801 × 13864445393<11> × 82413922847<11> × 4170493266061<13> × 227109283745807808529<21> × 1620221568881364582821<22> × 1206506689449517154664984054683391885701717268373<49> × 148187590480662837474891196151696943458464698104641724559095143058921833<72> × 2695243919434392578158999979834635005950141263938710984020428459530739329431<76> × 2953885481445189985266757657922898262312591197062248239503915981547453965165773<79> |