Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
90: | \[{8^{90}-1\over7}\] | 34 × 11 × 19 × 31 × 73 × 151 × 271 × 331 × 631 × 811 × 15121 × 23311 × 87211 × 262657 × 348031 × 18837001 × 49971617830801<14> × 385838642647891<15> |