Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 320: | \[{19^{320}-1\over18}\] | 27 × 52 × 11 × 17 × 41 × 97 × 151 × 181 × 911 × 2251 × 3833 × 5441 × 15073 × 113921 × 151681 × 174721 × 563377 × 2772481 × 478382041 × 14706033761<11> × 16936647121<11> × 1244461084375681<16> × 1486811410142377153<19> × 6163870442158237952544812259041<31> × 30008663379835140331261614092712001<35> × 274254682725217636458847635846091201<36> × 1811734042398021137734599214581536786155361<43> × 545314183664181805218118434494470385137684084154361563908493142721<66> × 404098930578608277993181438068981493334507703129948464671923673281041891707201<78> |