Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
437: | \[{3^{437}-1\over2}\] | 47 × 1597 × 363889 × 1001523179 × 4400140239259780643<19> × 15627149386345831933<20> × 76907777590720989373489360682236534152419285175538746028263539<62> × 109801700602892988885554977927721903523978272677330984673115943303014779629823936070205429<90> |