Base 9 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 173: | \[{9^{173}-1\over8}\] | 347 × 762239 × 993367 × 14427163 × 2125048865543<13> × 125330011023211<15> × 156026417563831897<18> × 31072285114904997233712868061148862483<38> × 30985428700388045508959018054392810762033149280306907746766819<62> |