Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 381: | \[{7^{381}-1\over6}\] | 3 × 19 × 130303 × 2208277 × 260461507 × 9809667961<10> × 11699360074183<14> × 3451948895547127<16> × 554351226505275380676162672703<30> × 245341643198368582843352144598480744468850041775022125500767047213117<69> × 6952461160701470612202818233940529213107360731457698905255510028090770092705825094126357883629686419426968832151617441146218083567508164304678511789151989092787979<163> |