Base 17 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
80: | \[{17^{80}-1\over16}\] | 24 × 32 × 52 × 11 × 29 × 41 × 71 × 101 × 241 × 18913 × 21881 × 41761 × 63541 × 88741 × 184417 × 3583912721 × 1186844128302568601<19> × 2741517463686662290741112321<28> |