Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 300: | \[{18^{300}-1\over17}\] | 54 × 73 × 11 × 13 × 19 × 31 × 41 × 61 × 101 × 151 × 229 × 307 × 401 × 457 × 601 × 1201 × 2711 × 5101 × 6301 × 9041 × 15101 × 15121 × 16921 × 18401 × 22501 × 102701 × 130651 × 136651 × 145501 × 558721 × 602401 × 738851 × 1597801 × 18088801 × 106487551 × 7804804801<10> × 11630180251<11> × 78180455401<11> × 201870485101<12> × 240320568001<12> × 673445124601<12> × 1437058645425001<16> × 27902025782474101<17> × 246054241904217701<18> × 17254127651933924651<20> × 21162386787273369601<20> × 1386116069876795574233701<25> × 129278406971133461403718040401<30> × 9102797501693359358605478900008701670201<40> |