Base 17 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
127: | \[{17^{127}-1\over16}\] | 509 × 2287 × 19813 × 9085073 × 30481352405221<14> × 18096566898199845748876620858956400873835703993540207333321980837727802056336586866370261470365091582482555679697516241491181<125> |