Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 424: | \[{31^{424}-1\over30}\] | 27 × 13 × 37 × 107 × 409 × 1061 × 1129 × 26713 × 30529 × 83423 × 185183 × 218149 × 656989 × 14559737 × 19503537629<11> × 250406079118297<15> × 2210276655188599<16> × 2285746506783621121<19> × 88387933035190440551<20> × 1593405992841712852324481273<28> × 478103814896755465120707905491<30> × 113900949304539450007305173955673<33> × 192134951990744091401855365861355030929127981727245160575247707028635599926856700063683280566970115012231022547531704769994566573879767688697881496949<150> × [2349471283925431659311847606733046716633401990819957912629197395235613240897329289828118355180878093010862918402313146547939321082202475338636164237577382785943073353181787117018820629826511558160513246586982909334574497219872406420844305417472142861123505934617<262>] |