Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 168: | \[{7^{168}-1\over6}\] | 25 × 3 × 52 × 13 × 19 × 29 × 43 × 73 × 113 × 181 × 193 × 337 × 409 × 911 × 1201 × 2129 × 3361 × 4733 × 51031 × 309079 × 517553 × 515717329 × 11898664849<11> × 13564461457<11> × 4894546210513<13> × 195489390796456327201<21> × 2232059760329037670187857<25> |