Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 642: | \[{7^{642}-1\over6}\] | 23 × 3 × 19 × 43 × 643 × 1499 × 44841133 × 82413922847<11> × 859121000285791<15> × 23884590227767303<17> × 477280063808143381<18> × 1842220342523756359<19> × 27021933957682455661<20> × 227109283745807808529<21> × 1620221568881364582821<22> × 133817407045652473433183959363391437<36> × 1206506689449517154664984054683391885701717268373<49> × 2695243919434392578158999979834635005950141263938710984020428459530739329431<76> × 10730198025352317025440239990612887002644333899521305232793262178976733077193646658160210079258835226940868129<110> × 1017668873829510727349422530451520968311532984354969434933019528384900739026748236646329444762268376166911398845994029<118> |