Base 17 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 140: | \[{17^{140}-1\over16}\] | 22 × 32 × 52 × 11 × 29 × 71 × 101 × 281 × 701 × 21881 × 63541 × 88741 × 966211 × 5766433 × 21998621 × 22796593 × 25646167 × 100688449 × 15030659834591591<17> × 348838692130131428210021<24> × 512718953215732865581052501<27> × 1179552870542516698915727867308021<34> |