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Record history for k=2

k Primes Type Digits Year Discoverer
2 2996863034895 · 21290000 ± 1 Tuplet (twin) 388342 2016 Tom Greer, PrimeGrid, TwinGen, LLR
2 2618163402417 ·   21290000 · 2n - 1, n=0..1 CC, 1st kind (Sophie Germain) 388342 2016 Scott Brown, PrimeGrid, TwinGen, LLR
2 18543637900515 · 2666667· 2n - 1, n=0..1 CC, 1st kind (Sophie Germain) 200701 2012 Philipp Bliedung, PrimeGrid, TwinGen, LLR
2 3756801695685 · 2666669 ± 1 Tuplet (twin) 200700 2011 Timothy D. Winslow, PrimeGrid, TwinGen, LLR
2 65516468355 · 2333333 ± 1 Tuplet (twin) 100355 2009 (SG Grid), Peter Kaiser, Keith Klahn, Twin Prime Search, PrimeGrid, NewPGen, tpsieve, LLR
2 2003663613 · 2195000 ± 1 Tuplet (twin) 58711 2007 Eric Vautier, Dmitri Gribenko, Patrick W. McKibbon, Twin Prime Search, PrimeGrid, NewPGen, LLR
2 137211941292195 · 2171960 · n - 1, n=1,2 CC, 1st kind (Sophie Germain) 51780 2006 Zoltán Járai, Gabor Farkas, Timea Csajbok, Janos Kasza, Antal Járai
2 16869987339975 · 2171960 ± 1 Tuplet 51779 2005 Zoltán Járai, Gabor Farkas, Timea Csajbok, Janos Kasza, Antal Járai
2 33218925 · 2169690 ± 1 Tuplet 51090 2002 Daniel Papp, NewPGen, PRP, Proth.exe
2 318032361 · 2107001 ± 1 Tuplet 32220 2001 David Underbakke, Phil Carmody, NewPGen, PRP, PrimeForm
2 1807318575 · 298305 ± 1 Tuplet 29603 2001 David Underbakke, Phil Carmody, NewPGen, PRP, Proth.exe
2 665551035 · 280025 ± 1 Tuplet 24099 2000 David Underbakke, Phil Carmody, NewPGen, PRP, Proth.exe