Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 306: | \[{18^{306}-1\over17}\] | 73 × 17 × 19 × 73 × 103 × 137 × 307 × 443 × 919 × 991 × 1531 × 3673 × 10099 × 17137 × 34327 × 133417 × 465841 × 28281862627<11> × 590126284009<12> × 1895634885375961<16> × 10413571416962911<17> × 1543034531047775257<19> × 7290066101612459257<19> × 7563707819165039903<19> × 25383561616923867703<20> × 36996512544106327243<20> × 12987756239101305138847<23> × 4124844857754113069438689<25> × 13421863133137162708202675362604186683<38> × 213818099127345344099315823804116404264567927<45> × 642944494183502925312626186377796650764383068861962559<54> |