Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 286: | \[{31^{286}-1\over30}\] | 25 × 23 × 397 × 617 × 2861 × 3719 × 17863 × 42407 × 757241 × 2426789 × 7908811 × 150332843 × 1048563011 × 42716694944587<14> × 161769686049971436885163<24> × 24324654055543532347208267<26> × 165583314500736666051635439760761611353664808511258727834207<60> × 50899474667408346758995576864979611843619741446232682207699508094003<68> × 23918648831403913302296400995014480546769095734947706837413483216939856684020791530065950052612151108876282269867409490421558329906980164107596701686537002487719918861118993079<176> |