Base 17 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 99: | \[{17^{99}-1\over16}\] | 19 × 67 × 307 × 3697 × 48907 × 976669 × 1270657 × 7298280793<10> × 53203926799<11> × 2141993519227<13> × 15814892288119<14> × 3534366624825269090846591317571377816092437915221<49> |