Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
36: | \[{28^{36}-1\over27}\] | 32 × 5 × 13 × 192 × 29 × 37 × 127 × 157 × 271 × 757 × 24481 × 47221 × 50221 × 102547 × 444979 × 188878213 |