Base 17 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 107: | \[{17^{107}-1\over16}\] | 420679639271885197846600322471<30> × 125071034364823159241289607119367<33> × 540513282113623842932676815730895399371242372118573878904283258972331<69> |