Base 9 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 257: | \[{9^{257}-1\over8}\] | 1543 × 120277 × 57039521761081<14> × 688337912506999<15> × 1329772662933524112502310453951741137<37> × 1303684432177220040931228503924522275783855152532699243445654450720942101263148269<82> × 1720913254518608078999697740278242371099939495837448628479480528191193764106481658724739273<91> |