Base 17 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
70: | \[{17^{70}-1\over16}\] | 2 × 32 × 11 × 71 × 101 × 701 × 88741 × 966211 × 21998621 × 22796593 × 25646167 × 15030659834591591<17> × 512718953215732865581052501<27> |