Base 17 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 83: | \[{17^{83}-1\over16}\] | 186917 × 1441585450365875501<19> × 859764623611313847689900219<27> × 361636059093059401270170190932275191488900255093209<51> |