Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 450: | \[{28^{450}-1\over27}\] | 32 × 11 × 192 × 29 × 31 × 37 × 127 × 151 × 271 × 757 × 1801 × 3061 × 3511 × 4621 × 8101 × 15101 × 15991 × 36901 × 52201 × 53951 × 102547 × 106801 × 444979 × 637421 × 691651 × 734941 × 2606251 × 7302331 × 39148201 × 48403441 × 84673681 × 6813064001<10> × 7984305701<10> × 150417579601<12> × 551640495331<12> × 222929435014083414901<21> × 346037355898337840190301<24> × 171813927594772108174052851<27> × 1114029602365666612314868561<28> × 1214016885302580230773187551<28> × 196611750309146090071121900014423528855166926267801<51> × 20716897876162678915881372822524943490105869959216045021112043930291788169158970491908251864940865543368400712970334006904301074201<131> × [455998864346306565971337770572758223743496814858212471139871747384633697483282766904889976707595846202488633340029143182191670603588998297886601525595753262659424126763008001<174>] |