Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 243: | \[{28^{243}-1\over27}\] | 35 × 192 × 271 × 541 × 1459 × 12637 × 444979 × 68948693997660959163751<23> × 467102764647624870534174882972667122829050205740085854715337092963516619074219<78> × [49748563547624842748515294698833504219394215020330055284304340005415997808605297002809431801328288551487750970357469337973938052021231678249798787902596454580683647270207615877361820910598602780403344522184191035884207196952637<227>] |