Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 406: | \[{8^{406}-1\over7}\] | 32 × 7 × 43 × 59 × 127 × 233 × 337 × 1103 × 2089 × 4177 × 5419 × 136417 × 3033169 × 121793911 × 596834617 × 3692022713 × 1602776802691<13> × 9857737155463<13> × 96076791871613611<17> × 175314482313096251408712577<27> × 17396456098240082242545082771<29> × 252715814615565962418688965855731<33> × 21645504555681139560493305558155803<35> × 11348055580883272011090856053175361113<38> × 15109165329245515231985834925494692879<38> × 16086815316499827472365485208334357981931315800699584898530365449<65> |