Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 369: | \[{28^{369}-1\over27}\] | 32 × 192 × 83 × 271 × 821 × 10333 × 444979 × 801469 × 32512427 × 763210858591<12> × 31283377997918467969<20> × 4331535016678429372129<22> × 4495294535482012470972518309284152114589<40> × 7535061144448219855718938274686920931447<40> × 961413627223934919442298688103103843727336437853883723949761<60> × [1534448319581484359634102997848119831662965598879327657077158710635826110341520143780080593636311775301311182128337776408999805838055475114442382841220509482698060466864887905867135505488351667659902980361048378685714852620130817922892996355854935835098925165480393535664243156583277128238434066905416876001<307>] |