Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 517: | \[{7^{517}-1\over6}\] | 1123 × 2069 × 293459 × 13722816749522711<17> × 33547155065898563<17> × 63681511996418550459487<23> × [686650009400705891130454651169770488912726615880851086456853508855130535090334891679892024157811868601275983855106530214445601400973384564014562183314808124727430685798888913019770442973346490414670526180792450785285767722393027464259277010222291598666186953304615618349101680339459353942552005582687903723781825973509292198593612039974901879725974196606055269509520367<369>] |