Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
79: | \[{31^{79}-1\over30}\] | 317 × 279977 × 290879 × 32846285357<11> × 9885529552310437<16> × 26125966850815940841819460903165666556867136804500824658834737808083425862291<77> |