Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 506: | \[{8^{506}-1\over7}\] | 32 × 232 × 47 × 67 × 89 × 139 × 683 × 4049 × 10627 × 20857 × 85009 × 178481 × 599479 × 1633369 × 2796203 × 4036363 × 31797547 × 46025761 × 4103188409 × 81776791273<11> × 168749965921<12> × 10052678938039<14> × 44261191624217967508561<23> × 199957736328435366769577<24> × 83730859983591586460452561<26> × 44667711762797798403039426178361<32> × 2822551529460330847604262086149015242689<40> × 13401760807379286396179302280407577245033458566053684427401459701338953411<74> × 66060018768078882068514915840314543857274440609237251168154401305136486254148474475678359078435292711536864866655643519<119> |