Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 190: | \[{18^{190}-1\over17}\] | 11 × 192 × 41 × 191 × 761 × 2711 × 6841 × 9041 × 253081 × 13828961 × 6089884909802812423<19> × 542059346041565200721<21> × 1961870762757168078553<22> × 460137572778371557785054623257871<33> × 1862457611364175487570409238012726994823669889631<49> × 24233168274463773052308872768014417720505813061818062962123091<62> |