Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 243: | \[{8^{243}-1\over7}\] | 73 × 487 × 2593 × 71119 × 80191 × 97687 × 262657 × 379081 × 97685839 × 16753783618801<14> × 192971705688577<15> × 3712990163251158343<19> × 664728004346558283448724389870269691211809<42> × 101213745778143742250901040788003424950068418098259161142719688891708905138274462262307761<90> |