Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 478: | \[{15^{478}-1\over14}\] | 24 × 479 × 17209 × 304009 × 1332187 × 3394757 × 92218620353<11> × 1744821374239<13> × 165144484922419<15> × 3501854708720764037<19> × [54779137258049531397082655768353334452830051006976464246280353468933851576550008694473729736813782455778859784504675830101986706148716134565336696710670280702698695771820700637834476504819355520082938024881678511360625850760340890747<233>] × [1147295679332685043878118467314843783812234588946459187977033440335378822452641534909449609585207557790795771759284317908759814724938512324579680690961907200801518023111654669663637852754118581284539199450243067104429701600901960175376972766344613<247>] |