Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 281: | \[{13^{281}-1\over12}\] | 563 × 41571232169<11> × 2740708636527091<16> × 30840338294916697<17> × [439154622576640635464347943695593004516134845576623383359739504468403607825031332040189390790639717598113980797219718892060694836207532471085792509326307078587916108971055602272910478258466304182004703516761108640374306820627499583400511078888043790114344032606430529<267>] |