Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 285: | \[{18^{285}-1\over17}\] | 73 × 31 × 41 × 191 × 601 × 2281 × 2711 × 6841 × 441751 × 558721 × 2496031 × 13828961 × 1288363483639<13> × 6089884909802812423<19> × 1250199777341452653656071<25> × 460137572778371557785054623257871<33> × 1135070056132121343004681823047441<34> × 1862457611364175487570409238012726994823669889631<49> × 1934004125768145465570516704926232171207404436499236846160885533027132070748347452416821270615953816530858731791781014975142054922765615842721<142> |