Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 158: | \[{31^{158}-1\over30}\] | 25 × 317 × 279977 × 290879 × 68582587 × 29004567023<11> × 32846285357<11> × 1869794964827<13> × 9885529552310437<16> × 26125966850815940841819460903165666556867136804500824658834737808083425862291<77> × 55201337274663704471468693295260683907662848098219075096317741794735469089074948193673<86> |