Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 440: | \[{19^{440}-1\over18}\] | 24 × 52 × 112 × 17 × 23 × 41 × 89 × 151 × 181 × 661 × 881 × 911 × 2251 × 3833 × 104281 × 110881 × 774797 × 62060021 × 121434809 × 478382041 × 14706033761<11> × 16936647121<11> × 25279866481<11> × 50766225049<11> × 253239693257<12> × 484536191701<12> × 18815582771569<14> × 136872109280136121<18> × 150669382018464871<18> × 439458669164322281<18> × 48381877771677135533<20> × 897434095443561438837961170946421<33> × 2762720155370058278742863792112809157901<40> × 272643515739729963752115465874279238487974845392517778849696269539382181<72> × [40808106363074301154531255810121568705918478646696096803512379255818268627047718917585599852721444743007640812203500861149731214607738280574020572477289251717889944592929237627229281486468210705841<197>] |