Base 14 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
67: | \[{14^{67}-1\over13}\] | 269 × 12329 × 169913 × 2516066164220253191649971614939<31> × 3349702521889138376311452937393733<34> |