Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 319: | \[{20^{319}-1\over19}\] | 59 × 929 × 10789 × 143609 × 466307299 × 3340057601 × 10778947368421<14> × 71353204641689<14> × [5525459941355219846033552331009445364481844332208454577473130068761741838171384796921022795402734792586928908957961625075433914062904932173803668771741754927965755542884878214633189023436499655210941103970125820360914615099062055987845370546817254471702656867885078631249474749286651471352276813672812874640192447869224683874014032989248164238470567654381<355>] |