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Record history for k=8

k Primes Type Digits Year Discoverer
8 2373007846680317952 · 761# · 2n + 1, n=0..7 CC, 2nd kind 338 2016 Andrey Balyakin
8 89628063633698570895360 · 593# · 2n - 1, n=0..7 CC, 1st kind 266 2015 Andrey Balyakin
8 5175268103676 · 557# · 2n - 1, n=0..7 CC, 1st kind 239 2015 Oscar Östlin, NewPGen, PrimeForm
8 29995576270632 · 550# + 1277 + 0,2,6,12,14,20,24,26 Tuplet 236 2014 Norman Luhn
8 1148424905221 · 509# · 2n + 1, n=0..7 CC, 2nd kind 225 2010 Dirk Augustin, NewPGen, PrimeForm
8 330846961 · 503# + 349129635971 + 0,2,6,8,12,18,20,26 Tuplet 218 2008 Jens K. Andersen
8 12874261020824 · 463# + 88793 + 0,6,8,14,18,20,24,26 Tuplet 206 2005 Norman Luhn
8 97510235 · 421# + 322355908991 + 0,2,6,8,12,18,20,26 Tuplet 180 2005 Torbjörn Alm & Jens K. Andersen
8 4319152256906 · 400# + 1277 + 0,2,6,12,14,20,24,26 Tuplet 174 2004 Norman Luhn
8 65677369861 · 380# + 18000020393471 + 0,2,6,8,12,18,20,26 Tuplet 165 2003 Torbjörn Alm & Jens K. Andersen
8 15234072433401 · 375# + 43813839521 + 0,2,6,8,12,18,20,26 Tuplet 164 2002 Norman Luhn
8 243551752728 · 320# + 1277 + 0,2,6,12,14,20,24,26 Tuplet 142 2001 Graeme Leese, Michael Bell, Matt Jack, Michael Davison, Ben Lowing, Tim Nightingale, APSieve