Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 174: | \[{20^{174}-1\over19}\] | 32 × 7 × 59 × 127 × 349 × 421 × 523 × 929 × 1741 × 8179 × 8527 × 10789 × 143609 × 564979 × 1177459 × 466307299 × 67054458649<11> × 71353204641689<14> × 10940140435272203<17> × 134223608855082547<18> × 2097957102415029980636836147<28> × 12058479697803056289880300867<29> × 3605403851353821123741083595382953185544609831777342451<55> |