Riesel primes of the form 20625•2n-1

Current data

k , b : 20625 , 2 Type : 315 Count : 94 Nash : 4786 Max n : 1,000,000 Date : 2021-07-20

2, 3, 4, 5, 7, 8, 10, 15, 23, 27, 28, 34, 35, 48, 53, 57, 65, 74, 87, 103, 136, 151, 155, 178, 201, 207, 216, 232, 261, 295, 303, 362, 369, 402, 412, 507, 511, 676, 761, 885, 1034, 1493, 1644, 1663, 1835, 2615, 3490, 5117, 5271, 6600, 6753, 6951, 8076, 8627, 9215, 13620, 13835, 14085, 15284, 19386, 19810, 29435, 29850, 32451, 33954, 34186, 45346, 61821, 64349, 73961, 84387, 99783, 120794, 124946, 126701, 158092, 159306, 163355, 218363, 254944, 280424, 287052, 299537, 390809, 402043, 432045, 466289, 656375, 748615, 762932, 771928, 836987, 934394, 943914

History

• 2021-07-20: Checked to n = 400000, Alexander Jones, released
• 2021-06-01: Checked to n = 375000, Alexander Jones
• 2021-01-13: Checked to n = 350000, Alexander Jones
• 2020-10-01: Checked to n = 325000, Alexander Jones
• 2020-06-17: Checked to n = 300000, Alexander Jones
• 2020-03-17: Reserved by Alexander Jones for n ≤ 400,000
• 2018-06-23: Checked n = 400000  -  1000000, RPS Drive 9, released
• 2011-11-23: Checked to n = 1007, Gary Barnes
• 2011-04-08: Found n = 943914, Peter Benson, RPS Drive 9
• 2011-03-24: Found n = 934394, Peter Benson, RPS Drive 9
• 2010-11-16: Found n = 836987, Peter Benson, RPS Drive 9
• 2010-09-25: Found n = 771928, Larry Soule, RPS Drive 9
• 2010-09-15: Found n = 762932, Larry Soule, RPS Drive 9
• 2010-09-10: Found n = 748615, Peter Benson, RPS Drive 9
• 2010-06-14: Found n = 656375, Peter Benson, RPS Drive 9
• 2009-06-06: Found n = 466289, David Metcalfe, RPS Drive 9
• 2009-05-13: Found n = 432045, Lennart Vogel, RPS Drive 9
• 2009-05-12: Found n = 402043, Predrag Minovic, RPS Drive 9
• 2009-05-12: Reserved by RPS Drive 9 for n > 400000
• 2008-07-23: Checked to n = 10000, David Harrison