Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 231: | \[{31^{231}-1\over30}\] | 3 × 23 × 43 × 331 × 397 × 463 × 617 × 2927 × 6301 × 13780537 × 150332843 × 917087137 × 23503054499<11> × 816786763717<12> × 2813432694367<13> × 16169321243923<14> × 650141690025315305584300036801<30> × 263768160996144192120004532942855021486760529559458116494001319<63> × 18225241724783414229875870167744177309564835595780296438316324273194815639994673780634745001828916211526860595452766963491106841897708169725785735767568192763<158> |