Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 159: | \[{13^{159}-1\over12}\] | 3 × 61 × 107 × 19081 × 194723 × 189541180943969<15> × 8403659652641423<16> × 274690322498001718403<21> × 3427228994031643333154071154149053274860593664257603210811066898226465082000227199834839346040481885997666537481<112> |