Riesel primes of the form 261•2n-1

Current data

k , b : 261 , 2 Type : 3 Count : 46 Nash : 2394 Max n : 2,000,000 Date : 2013-03-08

1, 3, 6, 9, 21, 34, 43, 49, 114, 115, 178, 322, 411, 438, 454, 589, 598, 754, 801, 1173, 1546, 1699, 2155, 2994, 4038, 5439, 6442, 10699, 12274, 13314, 13911, 19309, 28675, 29658, 31173, 33606, 65763, 90861, 116706, 185823, 618918, 660709, 802123, 827599, 850383, 1843555

History

• 2013-03-08: Checked to n = 2000000, Peter Benson, released
• 2013-03-05: Found n = 1843555, Peter Benson
• 2013-03-01: Reserved by Peter Benson from n=1300000
• 2012-05-14: Checked to n = 1300000, James P. Burt, released
• 2011-12-31: Checked to n = 1100000, James P. Burt
• 2011-12-10: Reserved by James P. Burt from n=1000000
• 2009-07-30: Reserved by Borys Jaworski from n=1000000
• 2007-12-20: Found n = 850383, Adam Sutton
• 2007-12-04: Found n = 827599, David Metcalfe
• 2007-11-15: Found n = 802123, David Metcalfe
• 2007-06-09: Found n = 660709, Carlos Eduardo Pinho
• 2007-05-07: Found n = 618918, Predrag Minovic
• 2004-05-16: Found n = 185823, Gary Chaffey
• 2003-08-04: Found n = 116706, Steven Harvey