Base 17 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 103: | \[{17^{103}-1\over16}\] | 2045745317855197068998380700573793154366295127535115833<55> × 166443696917018148599711150670340452472359763769837566202297165170932079<72> |