Base 17 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
85: | \[{17^{85}-1\over16}\] | 5441 × 10949 × 88741 × 208931 × 1749233 × 22296011 × 24543581 × 2699538733 × 4939937011021<13> × 7517339434046845421<19> × 228438898023070765592141<24> |