Riesel primes of the form 2055•2n-1

Current data

k , b : 2055 , 2 Type : 315 Count : 39 Nash : 1955 Max n : 1,025,000 Date : 2017-06-20

2, 6, 15, 17, 20, 32, 66, 81, 87, 89, 101, 135, 461, 465, 1205, 1815, 1901, 2702, 3725, 4502, 10655, 11438, 26301, 26858, 35649, 38130, 44826, 61481, 77237, 81938, 90848, 216369, 277335, 372282, 375695, 528561, 667599, 692202, 761537

History

• 2017-06-20: Checked n = 600000 - 1025000, Michael Curtis
• 2015-05-18: Checked n = 600000 - 700000, Karsten Bonath
• 2013-08-30: Checked n = 1010000 - 1025000, RPS Drive 11, released
• 2013-01-09: Reserved by RPS Drive 11, from n = 1010000
• 2013-01-08: ?, Michael Curtis, Steven Tjung, will stop testing at n = 1010000
• 2012-02-18: Checked n = 350000 - 425000, NPLB Drive 12C, released
• 2012-01-07: 667599 confirmed, Steven Tjung
• 2012-01-03: Checked n = 250000 - 350000, NPLB Drive 12B, released
• 2011-12-31: Reserved by NPLB Drive 12C, for n = 350000 - 425000
• 2011-12-07: Found n = 761537, Steven Tjung
• 2011-10-31: Checked n = 666666 - 700000, RPS Drive 11, released
• 2011-10-20: Found n = 692202, Peter Benson, RPS Drive 11
• 2011-09-12: Found n = 667599, Peter Benson, RPS Drive 11
• 2011-09-03: Reserved by RPS Drive 11, from n = 666666
• 2010-11-11: Checked n = 400000 - 600000, Steven Tjung
• 2010-03-26: Reserved by NPLB Drive 12B, for n = 250000 - 350000
• 2010-01-05: Checked n = 50000 - 250000, NPLB Drive 12A, released
• 2009-12-18: Checked n = 20000 - 50000, Karsten Bonath
• 2009-08-13: Reserved by NPLB Drive 12A, for n = 50000 - 250000
• 2009-07-13: Found n = 528561, Steven Tjung
• 2009-06-28: Checked n = 10000 - 20000, Thomas Ritschel
• 2008-09-28: Checked n = 360000 - 400000, Steven Tjung
• 2008-02-21: Found n = 375695, Steven Tjung
• 2008-02-21: Found n = 372282, Steven Tjung
• 2008-02-02: Checked n = 300000 - 360000, Steven Tjung
• 2008-01-11: Checked n = 280000 - 300000, Michael Curtis
• 2008-01-03: Checked n = 240000 - 280000, Michael Curtis
• 2007-12-18: Checked n = 166000 - 240000, Michael Curtis
• 2007-08-07: Checked n = 10000 - 166000, Michael Curtis
• 2007-07-06: Checked n = 1 - 10000, Gary Barnes
• 2007-07-04: Checked to n = 160000, Michael Curtis
• 2007-07-04: Reserved by Michael Curtis