Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 126: | \[{28^{126}-1\over27}\] | 32 × 192 × 29 × 37 × 43 × 113 × 127 × 271 × 631 × 757 × 1009 × 2269 × 13007 × 29443 × 35771 × 102547 × 132679 × 444979 × 546211 × 1905121 × 4422461 × 164630467 × 1994659633 × 28927311337<11> × 1266889762657<13> × 223934956756993189<18> × 154154940307497300453157<24> × 80504606285644335564853693<26> |