Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 455: | \[{18^{455}-1\over17}\] | 41 × 71 × 79 × 449 × 521 × 911 × 2711 × 8009 × 8191 × 21841 × 80207 × 4274201 × 29759719289<11> × 107888439023<12> × 2062880843394281<16> × 4164889456901862302881<22> × 16253593096956867886841881<26> × 147717010530074183597053201<27> × 260674349667764744544365521<27> × 7122627224638909118690351246321<31> × 119941938141663914560035192594531172177434180409487272285332931752751273<72> × [861219512668001875082979447708527821900994998301118526678073267947657248051366521741988069533283905933590335119840275414891766235933375884659739645566831080513945595347346185600551052357885587926398506560607521651929036603927783669819431515485260700847090509406780069104318582111618547158401<291>] |