Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 272: | \[{7^{272}-1\over6}\] | 26 × 52 × 172 × 137 × 1201 × 14009 × 20129 × 94793 × 169553 × 59361349 × 2767631689 × 5388077170097<13> × 29078814248401<14> × 49853897949169<14> × 133088039373662309<18> × 638991748543082113037456009420293477766438233<45> × 325812091330120551130834546785671855514544454484727997217283987549927591807767121<81> |