Base 9 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
86: | \[{9^{86}-1\over8}\] | 2 × 5 × 173 × 431 × 470593 × 2641485701 × 55473422113<11> × 903239908009<12> × 380808546861411923<18> × 82064241848634269407<20> |