Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 368: | \[{28^{368}-1\over27}\] | 5 × 17 × 29 × 47 × 157 × 1657 × 76913 × 329729 × 614657 × 893413 × 4136689 × 115152031 × 13675021313<11> × 22223646961<11> × 140668620541<12> × 1196967942673<13> × 4099849287367<13> × 452369327439935809<18> × 7353697549144438330337<22> × 6013890309283753610697077<25> × 1517655145813456319033978812579<31> × 879411245603819415373538876009993<33> × 933262884374979506335395316391085238575349369758188504186668361<63> × [1269327974585186493059130586271284358889351541148016989940512556332429285924562606265657347547132860265580666297597681926671734729249112682466865802818474018136144063678016439536726616306243760364584472814691923685578672245111729531080433<238>] |