Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 106: | \[{31^{106}-1\over30}\] | 25 × 107 × 1061 × 83423 × 185183 × 218149 × 19503537629<11> × 2210276655188599<16> × 88387933035190440551<20> × 1593405992841712852324481273<28> × 478103814896755465120707905491<30> × 113900949304539450007305173955673<33> |