Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 183: | \[{8^{183}-1\over7}\] | 73 × 367 × 38431 × 55633 × 1386525709821079<16> × 2305843009213693951<19> × 37201708625305146303973352041<29> × 38640785003914161847393041706513240920778826121806619738430718567496016974391844765260849<89> |