Base 12 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 129: | \[{12^{129}-1\over11}\] | 157 × 431 × 3784861 × 12313309 × 13444466603<11> × 32359758358562524963364461<26> × 1085519359321015557480968537352630926574094702421889253959355080487956521679317029369<85> |