Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 198: | \[{7^{198}-1\over6}\] | 23 × 32 × 19 × 23 × 37 × 43 × 67 × 199 × 1063 × 1123 × 3631 × 117307 × 173647 × 293459 × 1532917 × 10746341 × 12323587 × 8095532743<10> × 244188888967<12> × 1357105535093947<16> × 257736175658549346017402101729<30> × 14658652062814508164798530246267135510037033<44> |