Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 120: | \[{8^{120}-1\over7}\] | 33 × 52 × 11 × 13 × 17 × 19 × 31 × 37 × 41 × 61 × 73 × 109 × 151 × 181 × 241 × 331 × 433 × 631 × 1321 × 23311 × 38737 × 54001 × 61681 × 18837001 × 29247661 × 4562284561<10> × 168692292721<12> × 469775495062434961<18> |