Riesel primes of the form 17•2n-1

Current data

k , b : 17 , 2 Count : 43 Nash : 2416 Max n : 5,000,000 Date : 2021-03-21

2, 4, 6, 16, 20, 36, 54, 60, 96, 124, 150, 252, 356, 460, 612, 654, 664, 698, 702, 972, 1188, 1312, 3062, 4214, 4288, 5280, 9100, 20262, 21676, 24828, 46144, 62148, 79974, 117784, 211464, 310744, 310754, 429318, 601158, 605394, 2721830, 2946584, 4107544

Remarks :

The sequence A001774 in OEIS

History

• 2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
• 2015-07-12: Checked n = 2200000 - 5000000, RPS Drive K17
• 2015-06-30: Found n = 4107544, Serge Batalov, RPS Drive K17
• 2013-05-20: Found n = 2946584, Predrag Kurtovic, RPS Drive K17
• 2010-10-17: Found n = 2721830, Dmitry Domanov, RPS Drive K17
• 2010-01-03: Checked n = 1940000 - 1967592, 2052604 - 2200000, RPS Drive K17
• 2009-02-13: Checked n = 205000 - 1940000, RPS Drive K17
• 2009-01-09: Checked n = 1652076 - 1756058, 1967592 - 2052604, Peter Benson ( n = 1652076 - 1756058 also done by RPS Drive K17 )
• 2009-01-09: Checked n = 950000 - 1040815, 1140004 - 1191054, 1430012 - 1454792, 1455136 - 1480572, Peter Benson ( all ranges also done by RPS Drive K17 )
• 2006-09-22: 601158 confirmed, Predrag Minovic, RPS Drive K17
• 2006-09-19: Found n = 605394, Alexandre de Pereyra, RPS Drive K17
• 2006-08-08: 429318 confirmed, Tony Galvan, RPS Drive K17
• 2006-05-19: 310754 confirmed, Predrag Minovic, RPS Drive K17
• 2006-05-19: 310744 confirmed, Predrag Minovic, RPS Drive K17
• 2006-05-08: 211464 confirmed, Predrag Minovic, RPS Drive K17
• 2006-05-03: Reserved by RPS Drive K17 from n = 205000
• 2004-05-25: Checked n = 1 - 205034, Andrew Walker, released
• 2004-05-18: Found n = 601158, Peter Grobstich
• 2004-05-09: Reserved by Andrew Walker
• 2003-11-24: Found n = 429318, Peter Grobstich
• 2003-08-22: Found n = 310754, Peter Grobstich
• 2003-08-22: Found n = 310744, Peter Grobstich
• 2003-07-25: Found n = 211464, Peter Grobstich
• 2003-04-08: Found n = 117784, Steven Harvey
• 1999-07-02: Found n = 62148, Michael J. Graef
• 1999-06-08: Found n = 46144, Michael J. Graef
• 1998-08-09: Found n = 24828, Wilfrid Keller
• 1998-08-08: Found n = 21676, Wilfrid Keller
• 1998-08-06: Found n = 20262, Wilfrid Keller