Base 6 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 143: | \[{6^{143}-1\over5}\] | 23 × 859 × 3433 × 760891 × 3154757 × 62545486153056268832471<23> × 37049270815318353866751607662829595876460962025235869148795940042759<68> |