Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
161: | \[{31^{161}-1\over30}\] | 3221 × 1509997 × 61562537 × 118492459 × 917087137 × 7176374761323733117<19> × 986646967222146378724263038241652833546535799844509881<54> × 186062959581652609387976126600221254408544363092917013822151320511883897415376637837688680760719610650523210150632779215109778598959<132> |