Base 17 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 215: | \[{17^{215}-1\over16}\] | 1549 × 1721 × 88741 × 175905471019468501<18> × 3075877724153666279633<22> × 580422062263192648448501<24> × 1064542861270580708122635671<28> × 1021797364027209834215725013404387495915824259342822475869301<61> × 2722207657756247679386748221049039716194240072379340588619936794717004223116259555098255593329594781581<103> |