| first member | Digits | When? | Discoverer |
|---|---|---|---|
| 1st kind | |||
| 2618163402417 ⋅ 21290000 - 1 | Brown, PrimeGrid, TwinGen, LLR | ||
| 18543637900515 ⋅ 2666667 - 1 | Bliedung, PrimeGrid, TwinGen, LLR | ||
| 183027 ⋅ 2265440 - 1 | Wu, sgsieve, LLR | ||
| 648621027630345 ⋅ 2253824 - 1 | Jarai, Farkas, Csajbok, Kasza, Jarai | ||
| 620366307356565 ⋅ 2253824 - 1 | Jarai, Farkas, Csajbok, Kasza, Jarai | ||
| 1068669447 ⋅ 2211088 - 1 | Kwok, PSieve, LLR | ||
| 99064503957 ⋅ 2200008 - 1 | Urushi, LLR | ||
| 12443794755 ⋅ 2184516 - 1 | Batalov, NewPGen, LLR | ||
| 21749869755 ⋅ 2184515 - 1 | Batalov, NewPGen, LLR | ||
| 14901867165 ⋅ 2184515 - 1 | Batalov, NewPGen, LLR | ||
| 607095 ⋅ 2176311 - 1 | Wu, LLR | ||
| 48047305725 ⋅ 2172403 - 1 | Underbakke, TwinGen, LLR | ||
| 137211941292195 ⋅ 2171960 - 1 | Jarai, Farkas, Csajbok, Kasza, Jarai | ||
| 4931286045 ⋅ 2152849 - 1 | Doornink, TwinGen, LLR | ||
| 4318624617 ⋅ 2152849 - 1 | Doornink, TwinGen, LLR | ||
| 21195711 ⋅ 2143630 - 1 | Batalov, NewPGen, LLR | ||
| 838269645 ⋅ 2143165 - 1 | Batalov, NewPGen, LLR | ||
| 570409245 ⋅ 2143163 - 1 | Batalov, NewPGen, LLR | ||
| 2830598517 ⋅ 2143112 - 1 | Batalov, NewPGen, LLR | ||
| 4158932595 ⋅ 2143073 - 1 | Batalov, NewPGen, LLR | ||
| 7068555 ⋅ 2121301 - 1 | Predrag Minovic, TwinGen, LLR | ||
| 2540041185 ⋅ 2114729 - 1 | Underbakke, TwinGen, LLR | ||
| 18912879 ⋅ 298395 - 1 | Angel, Augustin, Jobling, NewPGen ,OpenPFGW) | ||
| 1213822389 ⋅ 281131 - 1 | Angel, Augustin, Jobling, NewPGen ,OpenPFGW, Proth) | ||
| 109433307 ⋅ 266452 - 1 | Underbakke, NewPGen, Proth | ||
| 3714089895285 ⋅ 260000 - 1 | Indlekofer, Jarai, Wassing | ||
| 18131 ⋅ 22817# - 1 | Lifchitz | ||
| 18458709 ⋅ 232611 - 1 | KerchnerIII, Proth | ||
| 14516877 ⋅ 224176 - 1 | KerchnerIII, Proth | ||
| 72021 ⋅ 223630 - 1 | Gallot | ||
| 276311 ⋅ 219003 + 1 | Ballinger, Proth | ||
| 92305 ⋅ 216998 + 1 | KerchnerIII, Proth | ||
| 8069496435 ⋅ 105072 - 1 | Dubner | ||
| 470943129 ⋅ 216352 - 1 | Jarai, Indlekofer | ||
| 5415312903 ⋅ 104526 - 1 | Dubner | ||
| 47013511545 ⋅ 102999 - 1 | Dubner | ||
| 39051 ⋅ 26001 - 1 | Keller | ||
| 2nd kind | |||
| 3622179275715 ⋅ 2256002 + 1 | Szekeres, Magyar, Gevay, Farkas, Jarai | ||
| 2570606397 ⋅ 2252762 + 1 | Batalov, NewPGen, OpenPFGW | ||
| 3526667708192 + 1 | Larrson, GeneFer, AthGFNSieve, PrivGfnServer, OpenPFGW | ||
| 1031571488192 + 1 | Jeppe Stig Nielsen, OpenPFGW | ||
| 556336461 ⋅ 2211355 + 1 | Batalov, NewPGen, LLR | ||
| 7775705415 ⋅ 2175115 + 1 | Batalov, NewPGen, OpenPFGW | ||
| 9985628193 ⋅ 2171008 + 1 | Nair, NewPGen, LLR | ||
| 129431439657 ⋅ 2170171 + 1 | Batalov, NewPGen, LLR | ||
| 185688291 ⋅ 2161616 + 1 | Rajala, NewPGen, OpenPFGW | ||
| 1579755 ⋅ 2158712 + 1 | Batalov, NewPGen, LLR | ||
| 648309 ⋅ 2148310 + 1 | Wu, sgsieve, LLR | ||
| 552903 ⋅ 2136156 + 1 | Wu, sgsieve, LLR | ||
| 163221 ⋅ 2124600 + 1 | Wu, sgsieve, LLR | ||
| 532323 ⋅ 2104389 + 1 | Wu, sgsieve, LLR | ||
| 581627055 ⋅ 293181 + 1 | Augustin, NewPGen, OpenPFGW | ||
| 3853775193 ⋅ 280000 + 1 | Nair, NewPGen, LLR | ||
| 1504084599 ⋅ 278341 + 1 | Sun, PRP, NewPGen, Proth | ||
| 863710323 ⋅ 252588 + 1 | Sun, PRP, NewPGen, Proth | ||
| 55003425 ⋅ 250000 + 1 | Chaffy, Proth | ||
| 164581485 ⋅ 249800 + 1 | Chaffy, Proth | ||
| 675558849 ⋅ 240217 + 1 | Augustin, Jobling, NewPGen, PRP | ||
| 16769025 ⋅ 234071 + 1 | Lifchitz, Gallot | ||
| 15015 ⋅ 223870 + 1 | Young , but recognized as CC2 many years later | ||
| 2926924 ⋅ 102032 + 1 | Dubner | ||
| 713851138 ⋅ 101854 + 1 | Dubner | ||