Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 383: | \[{3^{383}-1\over2}\] | 23747 × 2835733 × 263172186419<12> × 428039526143<12> × 999607767985979<15> × 1085363716480624115399141696533<31> × 33190033278142755621131998796931106472553322819160094041876778320897529519518964207437310103830957384577<104> |