Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 214: | \[{3^{214}-1\over2}\] | 22 × 643 × 50077 × 100153 × 229837 × 48965028505045123993421250406516036571557<41> × 4375617272295428356111030724847180250451293<43> |