Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 292: | \[{3^{292}-1\over2}\] | 23 × 5 × 293 × 439 × 11243 × 20149 × 15768033143<11> × 18678646095653<14> × 9460375336977361<16> × 86782247836514775846688349<26> × 961743544915378365754610333<27> × 38488154120055537150068589763279<32> |