Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 97: | \[{7^{97}-1\over6}\] | 389 × 971 × 4160924156784953821413999107825795646911807584554735726748631757909547764679<76> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 97: | \[{7^{97}-1\over6}\] | 389 × 971 × 4160924156784953821413999107825795646911807584554735726748631757909547764679<76> |