Base 16 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 500: | \[{16^{500}-1\over15}\] | 53 × 11 × 17 × 31 × 41 × 101 × 251 × 257 × 401 × 601 × 1601 × 1801 × 4001 × 4051 × 7001 × 8101 × 25601 × 28001 × 61681 × 76001 × 96001 × 268501 × 340801 × 1074001 × 2020001 × 2787601 × 3775501 × 22624001 × 42144001 × 82471201 × 229668251 × 3173389601 × 4278255361 × 269089806001<12> × 293543676001<12> × 1481124532001<13> × 4710883168879506001<19> × 47970133603445383501<20> × 94291866932171243501<20> × 5519485418336288303251<22> × 432363203127002885506543172618401<33> × 4728377214827208130517802311270133709042152454873053138954405100001<67> × 8877945148742945001146041439025147034098690503591013177336356694416517527310181938001<85> × 1499880353767194377609094494397700575495188415483528578229421025616319442334213511407849468420747202400448847136686072102119598082440903794953849388001<151> |