Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
143: | \[{31^{143}-1\over30}\] | 23 × 397 × 617 × 3719 × 42407 × 2426789 × 7908811 × 150332843 × 23918648831403913302296400995014480546769095734947706837413483216939856684020791530065950052612151108876282269867409490421558329906980164107596701686537002487719918861118993079<176> |