Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 416: | \[{18^{416}-1\over17}\] | 52 × 132 × 19 × 53 × 79 × 97 × 113 × 131 × 521 × 929 × 1873 × 2081 × 3329 × 7489 × 21997 × 113153 × 200513 × 15710657 × 113607841 × 3930785153 × 4020180841 × 4558459777<10> × 5601346141<10> × 29759719289<11> × 30894471809<11> × 142393385473<12> × 15715445027621<14> × 260800658620746193<18> × 270566843690980016129<21> × 3666313911384869983836065484314196953809<40> × 3401709183777602716441556774408009999551616635770113<52> × 15876117966668535872017008774601998349105927566044038099406704978500967619302492094097661313<92> × 391486572992618753549534873843083281030256988864102900729530572020483212163555887936240752369665524235045742701838108705838091643643045871648774308006337<153> |