Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 300: | \[{28^{300}-1\over27}\] | 3 × 53 × 11 × 13 × 29 × 31 × 61 × 101 × 151 × 157 × 271 × 757 × 1861 × 4621 × 14561 × 15101 × 15991 × 36901 × 45541 × 47221 × 53951 × 84961 × 106801 × 637421 × 734941 × 2449561 × 2606251 × 18536101 × 39148201 × 67643801 × 84673681 × 688406401 × 6813064001<10> × 7984305701<10> × 192184659301<12> × 198150196501<12> × 225566643512101<15> × 360728480233546501<18> × 3250144890260318201<19> × 3779203810704375601<19> × 222929435014083414901<21> × 171813927594772108174052851<27> × 1214016885302580230773187551<28> × 196611750309146090071121900014423528855166926267801<51> × 18921450320394637613786408174032734847441042662783501315569140501<65> |