Base 16 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 391: | \[{16^{391}-1\over15}\] | 47 × 137 × 277 × 953 × 1013 × 1657 × 2347 × 26317 × 30269 × 37537 × 43691 × 131071 × 178481 × 1578859 × 2796203 × 194902553 × 38984039641073<14> × 910228332911141<15> × 2239956782073053<16> × 291438334156037699<18> × 29111948248642861801<20> × 25806248225716242845491832244899635927231330561<47> × 2245714052771430777876143006786838979329549117936841<52> × 4735299062751047834629348947476766642710028552319600543<55> × 287285123293221369918534454621246986274927767213002226801223589<63> × 4607199245446735526396979761573315938962515016172415277872301181129066430193418592410653479532030129738241<106> |