Base 6 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
211: | \[{6^{211}-1\over5}\] | 35768449921<11> × 127491843407<12> × 22502477360820492307768713607212049<35> × 953864267757776424221068538656285528154532046177627<51> × 316405768432826434502246447605529100577755433867259915831<57> |