Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 157: | \[{13^{157}-1\over12}\] | 80071 × 27323390907418173038175977<26> × 295063315599316339543863695290104238086644858592512517962705048695877134993219317017123655213001634653994670323246534245042068113205982296697883<144> |