Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 500: | \[{7^{500}-1\over6}\] | 24 × 55 × 11 × 101 × 191 × 251 × 281 × 751 × 2551 × 2801 × 4021 × 13001 × 25301 × 685001 × 1173001 × 8140001 × 611302001 × 31280679788951<14> × 4833574921448501<16> × 31818863467130251<17> × 79787519018560501<17> × 2182816753758823696751<22> × 3169323413304763812001<22> × 38327966300231909291101<23> × 23873305978759492963375702715079458905862501<44> × 79347390994238721045338817576709220262296539001<47> × 5903546678356844440204179342119473011887617239565323800435501<61> × 2440997344855635200038818717027878994575781593880280802152256066219549211269501<79> |