Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 99: | \[{7^{99}-1\over6}\] | 32 × 19 × 37 × 199 × 1063 × 1123 × 3631 × 173647 × 293459 × 1532917 × 12323587 × 14658652062814508164798530246267135510037033<44> |