Base 23 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 163: | \[{23^{163}-1\over22}\] | 4317384634959051641<19> × 1395279662546069925421<22> × 6907685946250620263859263166941922635647462368161673777194674616567888025075540442541937159193214207618985743927552958610980846140200504661800699445414844609504835304474981619652373<181> |