Base 6 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 121: | \[{6^{121}-1\over5}\] | 23 × 3154757 × 4163261521 × 1304380464883<13> × 7274439979153836750841469647330331057551053697734443556853774027<64> |