Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 106: | \[{18^{106}-1\over17}\] | 19 × 107 × 4239894319 × 144828226935207572844491<24> × 11493496766783206018490283171055972341523<41> × 46950348182128332126379933709499018110168129345669111329<56> |