Riesel primes of the form 19635•2n-1

Current data

k , b : 19635 , 2 Type : 3152805 Count : 95 Nash : 4363 Max n : 1,000,000 Date : 2021-07-20

2, 4, 5, 12, 14, 19, 21, 36, 38, 47, 56, 57, 60, 80, 85, 89, 94, 125, 142, 152, 156, 164, 244, 247, 253, 254, 298, 299, 323, 342, 344, 346, 463, 484, 485, 497, 554, 561, 644, 698, 714, 1000, 1262, 1586, 1649, 1691, 1864, 1890, 1942, 2365, 2810, 3354, 3465, 3484, 3547, 4162, 4340, 5563, 5735, 6613, 8494, 8569, 8984, 9469, 11760, 11846, 12160, 12959, 13978, 14762, 15672, 16126, 19363, 22358, 30592, 34136, 35302, 43394, 45621, 52505, 52832, 64694, 67498, 79949, 99074, 125045, 156800, 189197, 252425, 317282, 354613, 535940, 621545, 889998, 939163

History

• 2021-07-20: Checked n = 375000 - 400000, Alexander Jones, released
• 2021-06-01: Checked n = 350000 - 375000, Alexander Jones
• 2021-01-13: Checked n = 325000 - 350000, Alexander Jones
• 2020-10-01: Checked n = 300000 - 325000, Alexander Jones
• 2020-06-17: Checked n = 1 - 300000, Alexander Jones
• 2020-03-17: Reserved by Alexander Jones
• 2018-06-23: Checked n = 400000 - 1000000, RPS Drive 9, released
• 2011-11-23: Checked n = 1 - 1007, Gary Barnes
• 2011-04-01: Found n = 939163, Peter Benson, RPS Drive 9
• 2011-01-16: Found n = 889998, Peter Benson, RPS Drive 9
• 2010-03-12: Found n = 621545, David Metcalfe, RPS Drive 9
• 2009-09-05: Found n = 535940, David Metcalfe, RPS Drive 9
• 2009-05-12: Reserved by RPS Drive 9 from n = 400000
• 2007-04-05: Found n = 317282, James P. Burt
• 2004-01-20: Found n = 189197, Jeffrey Sax
• 2004-01-12: Found n = 156800, Jeffrey Sax
• 2003-05-29: Checked to n = 128000, Shane Findley
• 2003-05-16: Found n = 125045, Shane Findley