Base 10 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 247: | \[{10^{247}-1\over9}\] | 53 × 79 × 1483 × 265371653 × 1111111111111111111<19> × 1024516164479902988921<22> × 1299823520026173021751<22> × 153360717056181938148119886537684707068363643930609<51> × 2971556702876640935255606565452637114794219035365675458103437520005089301113114724921776357458078804454589852862831100843<121> |