Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 448: | \[{28^{448}-1\over27}\] | 5 × 17 × 29 × 97 × 113 × 157 × 281 × 449 × 7841 × 9857 × 13007 × 23633 × 35771 × 68993 × 614657 × 749729 × 2012449 × 4338337 × 4422461 × 7734913 × 13430849 × 54034289 × 168542177 × 213827041 × 1100860153 × 22223646961<11> × 439840060577<12> × 2716827163186049<16> × 13807994072906881<17> × 72183193582863809<17> × 1421378441690122049<19> × 26216213363923968190987777<26> × 566057362533109984268704001<27> × 370863464090417870163498589335663617549081876590186498506393535841<66> × 6244902512809770076820976853754534271755538323443842548007231154552918881565323500029841138488573633<100> × 488840134254915308478324522133994849097670678148984844306627310872468850642176207026578156543145340129430147394913819365296433746228682906290676076092540111593322684925848329413328150043939695422070152507174500140525519489<222> |