Riesel primes of the form 2955•2n-1

Current data

k , b : 2955 , 2 Type : 315 Count : 44 Nash : 2705 Max n : 2,000,000 Date : 2024-04-14

4, 5, 7, 17, 28, 100, 266, 299, 356, 419, 484, 1180, 1238, 1244, 1807, 2402, 2525, 3355, 3568, 7172, 9328, 10069, 21710, 29948, 33662, 33904, 39568, 66728, 92260, 140669, 148667, 156301, 235742, 318355, 406658, 460802, 495709, 551281, 570821, 640259, 1274306, 1582609, 1748957, 1991780

History

• 2024-04-14: Checked to n = 2000000, RPS Drive 7, released
• 2019-09-09: Found n = 1991780, Michael Curtis, RPS Drive 7
• 2018-05-03: Found n = 1748957, Thomas Ritschel, RPS Drive 7
• 2017-07-26: Found n = 1582609, William Byerly, RPS Drive 7
• 2012-02-18: Checked to n = 425000, NPLB Drive 12C, released
• 2012-01-03: Checked to n = 350000, NPLB Drive 12B, released
• 2011-12-31: Reserved by NPLB Drive 12C, for 350001 ≤ n ≤ 425000
• 2011-09-13: Reserved to n = 2000000, RPS Drive 7
• 2010-11-19: Checked to n = 600000, NPLB Drive 11, released
• 2010-03-26: Reserved by NPLB Drive 12B, for 250001 ≤ n ≤ 350000
• 2010-01-05: Checked to n = 250000, NPLB Drive 12A, released
• 2009-12-18: Checked n = 20000 - 50000, Karsten Bonath
• 2009-10-03: Found n = 640259, Peter Benson, RPS Drive 7
• 2013-08-25: Found n = 1274306, David Metcalfe, RPS Drive 7
• 2009-08-22: Reserved to n = 1000000, RPS Drive 7
• 2009-08-13: Reserved by NPLB Drive 12A, for 50001 ≤ n ≤ 250000
• 2009-06-28: Checked n = 10000 - 20000, Thomas Ritschel
• 2009-06-22: Reserved by NPLB Drive 11, for 425001 ≤ n ≤ 600000
• 2009-06-18: Found n = 570821, Thomas Ritschel, RPS Drive 7
• 2009-04-25: Found n = 551281, David Metcalfe, RPS Drive 7
• 2009-03-13: Found n = 495709, David Metcalfe, RPS Drive 7
• 2009-03-03: Found n = 460802, David Metcalfe, RPS Drive 7
• 2009-02-06: Reserved by RPS Drive 7, for 360000 ≤ n ≤ 600000