Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 531: | \[{5^{531}-1\over4}\] | 19 × 31 × 829 × 198241 × 15865219 × 49289873735071<14> × 21180247636732981<17> × 2047572230657338751575051<25> × 340863370420651571324835367261<30> × 73953822585167093832416359054786790929<38> × 14365640833437852408745701299256005364862514221<47> × 64631683145954432465530191550610115926776655517951086789351011686105679920685058269<83> × 462874795660403356300569879415524971966226242816038681116975034535558486840301653541968427836374600849<102> |