Base 17 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 159: | \[{17^{159}-1\over16}\] | 307 × 25759 × 4375997670680275555605273053<28> × 2336661313161818672990011193252900057<37> × 3384685271072883544336298089500295476740117709636230347871082259873852105328080591046122680832486967321324643272556602807839<124> |