Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 354: | \[{7^{354}-1\over6}\] | 23 × 3 × 19 × 43 × 709 × 82483 × 89209 × 122131 × 459257 × 30308419 × 134927809 × 550413361 × 4261190159 × 1187164242679<13> × 1463159201029<13> × 14683403662888806475673<23> × 354639323684545612988577649<27> × 22724865586634953261986967832791<32> × 64289143014796069613986636959693464761093760104886421277219<59> × 33487363203493438372122688588486654229757635850757272880761206688497498053<74> |