Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 639: | \[{3^{639}-1\over2}\] | 13 × 757 × 2557 × 5113 × 7669 × 499396023937<12> × 22716867932413<14> × 115264393627813<15> × 3613512804721129<16> × 8141739904937449<16> × 89665588664737776553<20> × 3754733257489862401973357979128773<34> × 2971165616840631601622519837642615517137104343604088000852436710822744534335580285050186699259606283998807128229947638633758700778967412212751071313129133856529035201<166> |