Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 485: | \[{15^{485}-1\over14}\] | 11 × 971 × 4931 × 373115933 × 165984138349<12> × 3385663183327<13> × 1938177886827124931<19> × 211727039173815789139263712464214518933075943626165409606172029<63> × [39981731288746380764027288211372968604018100884151348265879928049247174022253362717138638026980253917320071881267055113992510431009577178181300539904516632232004117195855713057457085106686463059649354942850080014712044481934834807892759886861273746664220059049628834894864919029795673018835497433255194709258530969650582316394323138573640311330179297069915121235621388302030896691542353638558017381619128062245832956443913319234752602334401829701091<449>] |