Riesel primes of the form 6975•2n-1

Current data

k , b : 6975 , 2 Type : 315 Count : 94 Nash : 4518 Max n : 1,333,000 Date : 2025-05-05

3, 4, 6, 8, 9, 11, 12, 14, 15, 19, 21, 31, 42, 48, 56, 58, 59, 74, 102, 114, 154, 264, 278, 279, 292, 295, 317, 476, 483, 526, 659, 735, 736, 837, 856, 919, 1384, 1516, 1552, 1682, 1739, 1776, 2112, 2606, 2759, 2808, 3151, 3176, 3292, 3439, 3825, 3944, 4096, 5734, 6696, 6772, 7387, 7751, 7764, 9798, 13932, 16475, 16963, 17574, 21508, 23563, 26903, 28399, 35276, 37915, 39958, 43679, 48432, 56788, 60254, 68747, 203804, 213814, 220476, 249597, 292116, 363583, 389032, 481543, 529869, 544636, 554584, 562591, 639632, 687468, 853931, 974757, 1063347, 1321778

History

• 2025-05-05: Checked n = 10000 - 380000, Gary Barnes, released
• 2024-04-10: Checked n = 380000 - 1333000, RPS Drive 8, released
• 2014-09-18: Found n = 1321778, Michael Curtis, RPS Drive 8
• 2012-07-18: Found n = 1063347, Adam Sutton, RPS Drive 8
• 2011-05-18: Found n = 974757, Peter Benson, RPS Drive 8
• 2011-01-13: Found n = 853931, Peter Benson, RPS Drive 8
• 2009-11-30: Found n = 687468, Predrag Minovic, RPS Drive 8
• 2009-09-26: Found n = 639632, Peter Benson, RPS Drive 8
• 2009-07-15: Found n = 562591, Peter Benson, RPS Drive 8
• 2009-07-13: Found n = 554584, Predrag Minovic, RPS Drive 8
• 2009-07-04: Found n = 544636, David Metcalfe, RPS Drive 8
• 2009-06-02: Found n = 529869, David Metcalfe, RPS Drive 8
• 2009-04-26: Found n = 481543, Peter Benson, RPS Drive 8
• 2009-03-25: Found n = 389032, Predrag Minovic, RPS Drive 8
• 2009-03-24: Reserved by RPS Drive 8, for n = 380000 - 700000
• 2007-07-06: Checked n = 1 - 10000, Gary Barnes
• 2000-05-22: Found n = 60254, Bouk de Water
• 2000-05-19: Found n = 56788, Bouk de Water
• 2000-05-02: Found n = 48432, Bouk de Water
• 2000-05-02: Found n = 43679, Bouk de Water