| first member | Digits | When? | Discoverer |
|---|---|---|---|
| 1st kind | |||
| 89628063633698570895360 ⋅ 593# - 1 | Balyakin | ||
| 1106749879993647616 ⋅ 593# - 1 | Balyakin | ||
| 5175268103676 ⋅ 557# - 1 | Östlin, NewPGen, OpenPFGW | ||
| 2 ⋅ 65728407627 ⋅ 431# - 1 | Augustin, NewPGen, OpenPFGW | ||
| 1352438530 ⋅ 311# + 5705699 | Alm, Andersen, Primo | ||
| 548879116 ⋅ 181# - 1 | Augustin, NewPGen, OpenPFGW | ||
| 1742368093 ⋅ 89# - 1 | Augustin, NewPGen, OpenPFGW | ||
| 1360673835 ⋅ 250 - 1 | Augustin, NewPGen, Proth | ||
| 36097525695 ⋅ 241 - 1 | Jobling | ||
| 2nd kind | |||
| 2373007846680317952 ⋅ 761# + 1 | Balyakin | ||
| 112156947439087303442563072 ⋅ 491# + 1 | Balyakin | ||
| 1148424905221 ⋅ 509# + 1 | Augustin, NewPGen, OpenPFGW | ||
| 177497325593 ⋅ 229# + 1 | Augustin, NewPGen, OpenPFGW | ||
| 1831430532 ⋅ 107# + 1 | Augustin, NewPGen, OpenPFGW | ||