Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 308: | \[{28^{308}-1\over27}\] | 5 × 232 × 29 × 113 × 157 × 281 × 617 × 4159 × 13007 × 16633 × 27017 × 35771 × 135433 × 749729 × 4422461 × 6077039 × 50545507 × 419758571 × 1100860153 × 38286319457<11> × 540610746853<12> × 15215787226333<14> × 23946685543873549601<20> × 60219997983486828103<20> × 238589775536039117191<21> × 728277965042053100588761<24> × 8043246179584357573185817<25> × 5320614889323243834845114570091316426473321807889<49> × 3323986030471682700786256413689848243372715523859561<52> × 13384508062267214308988125690968580898647753496268443174423595447232861504742928150703597495787209338424210274775881<116> |