Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
166: | \[{18^{166}-1\over17}\] | 19 × 167 × 499 × 59263 × 207833 × 531646634129969<15> × 86802964875867109109279559751944809<35> × 10547130976787567739760741415960485703934860841255807268617487<62> × 147036853924655463957367394724909405011547533630037424225317134588980357966997809<81> |