Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
166: | \[{15^{166}-1\over14}\] | 24 × 167 × 1163 × 2158116330311<13> × 3981350970411868479901<22> × 106776979377071844077873<24> × 3220419108264156535849497113<28> × 31235627735815130163365248204426922784849286667<47> × 424091160188578436595274724511088099915436894806250614687<57> |