Base 14 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
71: | \[{14^{71}-1\over13}\] | 4261 × 954519632047180992533553119<27> × 44859123274519397633244020369148461475583526255489<50> |