Base 12 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 157: | \[{12^{157}-1\over11}\] | 3769 × 896587135133828036528709133<27> × 726514529033543807919801287197040980001034796785686751889280796142346177053039481359967328156592628916320568761087683134979537591149664153<138> |