Base 6 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 142: | \[{6^{142}-1\over5}\] | 7 × 37489 × 11735704315681<14> × 5757417485448059422914748320317168839<37> × 3546245297457217493590449191748546458005595187661976371<55> |