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Record history for k=4

k Primes n's Digits Year Discoverer
4 (1021747532 + 7399459n)60013#+1 0..3 25992 2019 Ken Davis, NewPGen, PrimeForm
4(1006521663 + 6205834n)60013#+10..3259922019Ken Davis, NewPGen, PrimeForm
4 (1631979959225000-1) + (164196977280000-1631979959225000)n 0..3 24092 2010 David Broadhurst, NewPGen, PrimeForm
4 (1000362700 + 2571033n)34687#+1 0..3 15004 2010 Mike Oakes, NewPGen, PrimeForm
4 (487069965225001-1) + (87940527245001-487069965225001)n 0..3 13556 2010 David Broadhurst, NewPGen, PrimeForm
4 (183009063225002-1) + (1367721245007-183009063225002)n 0..3 13556 2010 David Broadhurst, NewPGen, PrimeForm
4 (464049135225001-1) + (181836669240000-464049135225001)n 0..3 12050 2010 David Broadhurst, NewPGen, PrimeForm
4 (222139713225000-1) + (165710943240000-222139713225000)n 0..3 12050 2010 David Broadhurst, NewPGen, PrimeForm
4 (100997770 + 3624707n)27751#+1 0..3 11961 2008 Ken Davis, NewPGen, PrimeForm
4 (100668506 + 809963n)27751#+1 0..3 11961 2007 Ken Davis, NewPGen, PrimeForm
4 (101056849 + 412064n)27751#+1 0..3 11961 2007 Ken Davis, NewPGen, PrimeForm
4 (18271126 + 9548007n)235000+1 0..3 10544 2007 Jim Fougeron, PrimeForm
4 (2024725 + 197732n)23159#+1 0..3 10004 2006 Mike Oakes, NewPGen, PrimeForm
4 (3897833 + 19575072n)225000-1 0..3 7534 2004 David Broadhurst, PrimeForm