Riesel primes of the form 2685•2n-1

Current data

k , b : 2685 , 2 Type : 315 Count : 64 Nash : 2829 Max n : 2,000,000 Date : 2024-04-14

2, 8, 9, 29, 33, 38, 54, 56, 69, 74, 77, 89, 107, 126, 159, 174, 377, 389, 438, 461, 561, 618, 699, 758, 774, 936, 968, 1053, 1688, 1694, 1703, 1734, 1904, 1919, 3449, 3944, 5834, 12389, 20193, 24882, 25542, 32757, 40002, 53082, 71475, 91917, 94727, 101474, 110741, 112686, 118362, 130742, 198104, 208218, 277802, 284501, 303789, 328869, 372944, 378599, 394493, 483182, 489306, 1337858

History

• 2024-04-14: Checked to n = 2000000, RPS Drive 7, released
• 2014-01-19: Found n = 1337858, David Metcalfe, RPS Drive 7
• 2012-02-18: Checked to n = 425000, NPLB Drive 12C, released
• 2012-01-06: Reserved by NPLB Drive 12C, for 350001 ≤ n ≤ 425000
• 2012-01-03: Checked to n = 350000, NPLB Drive 12B, released
• 2011-12-11: Reserved by NPLB Drive 12B, for 250001 ≤ n ≤ 350000
• 2011-09-13: Reserved to n = 2000000, RPS Drive 7
• 2010-11-19: Checked to n = 600000, NPLB Drive 11, released
• 2010-01-05: Checked to n = 250000, NPLB Drive 12A, released
• 2009-12-18: Checked n = 20000 - 50000, Karsten Bonath
• 2009-10-06: 489306 confirmed, Vaughan Davies, NPLB Drive 11
• 2009-09-16: 483182 confirmed, Gary Barnes, NPLB Drive 11
• 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
• 2009-03-08: Found n = 489306, Peter Benson, RPS Drive 7
• 2009-03-04: Found n = 483182, Predrag Minovic, RPS Drive 7
• 2009-02-10: Found n = 394493, James P. Burt, RPS Drive 7
• 2009-02-09: Found n = 378599, James P. Burt, RPS Drive 7
• 2009-02-08: Found n = 372944, James P. Burt, RPS Drive 7
• 2009-02-06: Reserved by RPS Drive 7, for 360000 ≤ n ≤ 600000