Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 144: | \[{28^{144}-1\over27}\] | 32 × 5 × 13 × 17 × 192 × 29 × 37 × 73 × 127 × 157 × 193 × 271 × 757 × 7129 × 7321 × 12241 × 24481 × 47221 × 50221 × 59809 × 102547 × 151201 × 444979 × 614657 × 33806737 × 51605161 × 188878213 × 343785529 × 365764369 × 1350615169 × 22223646961<11> × 301407243681066768937<21> × 1163274799691679507451230132400597318921806951299089<52> |