Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 242: | \[{18^{242}-1\over17}\] | 19 × 23 × 199 × 727 × 13553 × 16127 × 51217 × 103577 × 536801 × 586367 × 6301307 × 15084343033<11> × 1246146170990257045549178839518663949276163<43> × 4718943043316870523219133735355434661850143852319520768777830891957567305620938739<82> × 27227533543753365982438399708085484080831743771008849850932265278999273377354114546362618762214332158687286162186495539771649<125> |