Riesel primes of the form 2085•2n-1

Current data

k , b : 2085 , 2 Type : 315 Count : 68 Nash : 3345 Max n : 1,310,000 Date : 2024-06-25

4, 6, 16, 18, 20, 24, 30, 43, 76, 84, 88, 89, 96, 100, 113, 128, 184, 186, 206, 266, 455, 494, 508, 570, 626, 646, 913, 1218, 1700, 2144, 2605, 3029, 3384, 3568, 3868, 4080, 4220, 4389, 4766, 5993, 6835, 8733, 9434, 11190, 12065, 13556, 13775, 17963, 21559, 27536, 36460, 43238, 46654, 54318, 92568, 93450, 106978, 124759, 193924, 248133, 290460, 357048, 424470, 434449, 454753, 477815, 1211126, 1276098

History

• 2024-06-25: Checked n = 1 - 1025000, Gary Barnes, double check, results included
• 2017-06-20: Checked n = 600000 - 1025000, Michael Curtis
• 2015-05-18: Checked n = 600000 - 700000, Karsten Bonath
• 2015-04-20: Checked n = 1025000 - 1310000, RPS Drive 12
• 2015-03-16: Found n = 1276098, Thomas Ritschel, RPS Drive 12
• 2013-09-16: Found n = 1211126, Lennart Vogel, RPS Drive 12
• 2013-08-30: Checked n = 1010000 - 1025000, RPS Drive 11, released
• 2013-08-28: Reserved by RPS Drive 12, from n = 1025000
• 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
• 2012-01-03: Checked n = 250000 - 350000, NPLB Drive 12B, released
• 2011-12-31: Reserved by NPLB Drive 12C, for n = 350000 - 425000
• 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
• 2009-09-25: Found n = 477815, Steven Tjung
• 2009-08-13: Reserved by NPLB Drive 12A, for n = 50000 - 250000
• 2009-06-28: Checked n = 10000 - 20000, Thomas Ritschel
• 2009-05-14: Found n = 454753, Steven Tjung
• 2009-04-11: Found n = 434449, Steven Tjung
• 2009-03-16: Found n = 424470, Steven Tjung
• 2008-09-28: Checked n = 360000 - 400000, Steven Tjung
• 2008-02-05: Found n = 357048, 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
• 2005-12-23: Found n = 248133, Chris Chatfield