Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 411: | \[{8^{411}-1\over7}\] | 73 × 823 × 187417 × 188994241 × 27261904199932321<17> × 32032215596496435569<20> × 5439042183600204290159<22> × 647923469936355993348337<24> × 298291609560028759691116319707152042481<39> × 10816232728441557118915234090482501297511543956995270175596058137530388549718867286559806775474779554487782175289676490449943536702273693676961916525211447523954910998549414709290012035793511899558253730932615419996225641317057287713<233> |