Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 214: | \[{28^{214}-1\over27}\] | 29 × 5525053 × 38391173 × 249636137 × 4043254583 × 183787279483<12> × 15468214205115032095625543<26> × 185037789791955268688604373<27> × 6102359176190553076504783383990134923678943943876340342187<58> × 10918539363625499270097471425742171417215920531583185245373984580863157<71> × 837090098412410188725442482636267887870957791645014167245290864888954324977667414713<84> |