Base 6 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 519: | \[{6^{519}-1\over5}\] | 43 × 40483 × 676417891 × 3594810136513<13> × 924669087985921<15> × 63724522930638793<17> × 131393944737852883<18> × 495043698717322221180325946047148316337<39> × 49112060736763005501476798588812362324755834052647694373042140638257<68> × 182207578264683089493858383020918811627594000501526518712612326479679426743760419<81> × 99914919640364708947001578975581110159320841669175902594829011578657424495364300719425942345165790382069208302883800455950309755640181025553<140> |