Base 6 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
281: | \[{6^{281}-1\over5}\] | 33721 × 186023 × 122413379955569789<18> × 228566796853368622765083206587<30> × 11762786832623811560644277958387970995125858157407<50> × 28717354535597728468537227064151476862005971007351781<53> × 1543716606774880990775734941009568252713968653903070066195497<61> |