Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 239: | \[{15^{239}-1\over14}\] | 479 × 1332187 × 3394757 × 3501854708720764037<19> × [1147295679332685043878118467314843783812234588946459187977033440335378822452641534909449609585207557790795771759284317908759814724938512324579680690961907200801518023111654669663637852754118581284539199450243067104429701600901960175376972766344613<247>] |