Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 239: | \[{31^{239}-1\over30}\] | 10039 × 35851 × 1347904553 × 1646972423 × 2573521409 × [4418334481910526298254808417165579059224230923523508398554801835841337689164134082103898934055681514142669921130321256621319737009323732609858475376955033326072244799764969316799297552933734015917811372360748258305519602190310072474685664037028846971985836570118335409010613510667503227425993796937000846063404495535051<319>] |