Riesel primes of the form 6165•2n-1

Current data

k , b : 6165 , 2 Type : 315 Count : 95 Nash : 4403 Max n : 1,333,000 Date : 2025-05-05

1, 2, 4, 5, 14, 17, 18, 23, 29, 34, 62, 69, 78, 79, 84, 138, 142, 155, 161, 170, 191, 194, 202, 249, 389, 438, 474, 504, 575, 617, 619, 624, 667, 691, 799, 1119, 1259, 1949, 2020, 2164, 2202, 2668, 2700, 2843, 3203, 3222, 5397, 5430, 5497, 5801, 5854, 6187, 7885, 8441, 9349, 9654, 12565, 13202, 17572, 20340, 24290, 26063, 29402, 34435, 35392, 36457, 38671, 38682, 40649, 45448, 47709, 60150, 79907, 84694, 86347, 99875, 107594, 109019, 134008, 139677, 243634, 254237, 350250, 404771, 423938, 426467, 432948, 752905, 775125, 802635, 820642, 838587, 930042, 988573, 1219740

History

• 2025-05-05: Checked n = 10000 - 380000, Gary Barnes, double-check n = 10000 - 50000, released
• 2024-04-10: Checked n = 380000 - 1333000, RPS Drive 8, released
• 2014-02-23: Found n = 1219740, Peter Benson, RPS Drive 8
• 2011-08-25: Found n = 988573, Peter Benson, RPS Drive 8
• 2011-03-13: Found n = 930042, Predrag Minovic, RPS Drive 8
• 2010-12-29: Found n = 838587, Peter Benson, RPS Drive 8
• 2010-12-02: Found n = 820642, Peter Benson, RPS Drive 8
• 2010-11-14: Found n = 802635, Peter Benson, RPS Drive 8
• 2010-10-10: Found n = 775125, Peter Benson, RPS Drive 8
• 2010-09-17: Found n = 752905, Peter Benson, RPS Drive 8
• 2009-05-02: Checked n = 10000 - 50000, David Metcalfe, from here
• 2009-04-08: Found n = 423938, Predrag Minovic, RPS Drive 8
• 2009-04-07: Found n = 432948, Thomas Ritschel, RPS Drive 8
• 2009-04-06: Found n = 426467, Thomas Ritschel, RPS Drive 8
• 2009-04-02: 404771 confirmed, David Metcalfe, RPS Drive 8, see announcement here.
• 2009-03-24: Reserved by RPS Drive 8, for n = 380000 - 700000
• 2009-03-17: Found n = 404771, Adam Sutton
• 2007-07-06: Checked n = 1 - 10000, Gary Barnes