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Record history for k=12

k Primes n's Digits Year Discoverer
12 (15079159689 + 502608831n)420#+1 0..11 180 2019 Norman Luhn
12 (1366899295 + 54290654n)401#+1 0..11 173 2006 Jeff Anderson-Lee, NewPGen, PrimeForm
12 (1075032530 + 89982195n)283#+1 0..11 128 2006 Jeff Anderson-Lee, NewPGen, PrimeForm
12 (53660216 + 27243281n)229#+1 0..11 100 2006 Jens Kruse Andersen
12 (117531238 + 1064977n)199#+1 0..11 91 2006 Norman Luhn
12 (30150295 + 3538849n)173#+1 0..11 77 2006 Mike Oakes, PrimeForm
12 (8986417 + 30820926n)157#+1 0..11 71 2005 Jens Kruse Andersen
12 17 + 1138781900732575213#n 5..16 22 2001 Phil Carmody