Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 605: | \[{3^{605}-1\over2}\] | 114 × 23 × 1321 × 3851 × 11617 × 81071 × 1719364021 × 3981923614021<13> × 560088668384411<15> × 38532276146138797331<20> × 657890411545272648205502849240259841<36> × 16285121142249140363782108952956635196636630939017731<53> × 891472432333938750677824718365693602050046587081708026251107816013595621941688966286020389587243147231755450938272504084401<123> |