Base 6 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 123: | \[{6^{123}-1\over5}\] | 43 × 8648131 × 25512169 × 141304123 × 1854850885886497427178961<25> × 41498448376119216462262063079126262444529017073<47> |