Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 170: | \[{18^{170}-1\over17}\] | 11 × 17 × 19 × 41 × 137 × 443 × 1361 × 2711 × 3911 × 9041 × 3462391 × 5124991 × 10275311 × 35919131 × 23718627631<11> × 1895634885375961<16> × 7563707819165039903<19> × 8923131267608947348958760704450309227970561<43> × 6391390774997931784580912565133739701149850312606557794030895233993179721<73> |