Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 412: | \[{15^{412}-1\over14}\] | 25 × 113 × 1031 × 1237 × 37493 × 998689 × 1134649 × 507243071 × 200298637228693651547511121879<30> × 1255816237933704895555335739049629<34> × 96306861556309936387593197402996201073146200561<47> × 3004789663465678591924723204758441117094121715756829<52> × 519026385414723540853974413380365896722060122651956414117<57> × 674358693056876934584617610923041851633516400427779738369510158345086262591080042492312995587123546014769952498067988385797388263170173122449186844355302241679420015687949123892071901388009498849042615995951256842463410147121768957<231> |