Base 22 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 254: | \[{22^{254}-1\over21}\] | 23 × 543307 × 844737621617899<15> × 28981652059852243<17> × 7634416214757200297933149<25> × 173417220023915378305302985526831<33> × 18579724700644679874044195538416893062486005355567459052646370543021687436330995546901278207624870182598071<107> × 597882986111295874526931346076383938367546465821972896124248264038234611459119308766140487614303567733639757729535687395065114624601205171<138> |