Base 17 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
191: | \[{17^{191}-1\over16}\] | 383 × 3738211891 × 434982187776031151<18> × 1040614417720875153980922623710710410558693711860297780292687787617961645137889597535042977002918062748358599883222417521926820055271801396611349496062807804964031064634363314273710367633482181965071220709<205> |