Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 237: | \[{18^{237}-1\over17}\] | 73 × 27967 × 338279 × 1104737 × 8437292431<10> × 12802037494726063<17> × 9886837665707422272737<22> × 448471334839783865684734425921433<33> × 1824771736962009962008821260930608362080770046711<49> × 59316840844318971267742273743168599285477845833245884090182923763142326485819701542235753373660860772154690455451949967055960648496955434604851630639<149> |