Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 308: | \[{7^{308}-1\over6}\] | 24 × 52 × 23 × 29 × 113 × 463 × 617 × 661 × 911 × 1123 × 1409 × 4733 × 293459 × 333103 × 5302529 × 10746341 × 258576319 × 724487149 × 6809710909<10> × 13564461457<11> × 83960385389<11> × 32817262777539703<17> × 443632323630099913<18> × 4181043906823655873<19> × 88262612316754526107621113329689<32> × 152111801516025381573834946322977<33> × 126567695136243621766525692557946301086617<42> |