Riesel primes of the form 289•2n-1

Current data

k , b : 289 , 2 Count : 33 Nash : 1642 Max n : 2,000,000 Date : 2011-12-24

1, 3, 13, 21, 25, 33, 73, 93, 115, 127, 397, 1255, 3751, 3801, 4771, 8997, 10063, 11253, 18663, 27525, 28009, 34041, 55693, 60243, 67891, 77391, 90201, 501991, 509401, 610737, 728205, 1098117, 1587151

History

• 2011-12-24: Checked to n = 2000000, Peter Benson, released
• 2011-11-28: Found n = 1587151, Peter Benson
• 2011-10-31: Reserved by Peter Benson from n=1000000
• 2009-09-14: Checked to n = 1000000, Gary Barnes, released
• 2009-09-02: Checked to n = 900000, Gary Barnes
• 2009-08-21: Reserved by Gary Barnes
• 2009-01-23: Checked to n = 800000, Gary Barnes, released
• 2009-01-01: Checked to n = 760000, Gary Barnes
• 2008-12-24: Checked to n = 700000, Gary Barnes
• 2008-10-22: Checked to n = 680000, NPLB Drive 4, released
• 2008-09-09: Reserved by NPLB Drive 4
• 2008-09-08: Checked to n = 600000, Gary Barnes
• 2007-07-18: Checked to n = 520000, Gary Barnes
• 2007-07-15: Checked to n = 503000, Gary Barnes
• 2007-07-14: Checked to n = 485000, Gary Barnes
• 2007-07-11: Checked n = 260000 - 470000, Gary Barnes
• 2006-09-16: Found n = 1098117, Bo Xiao
• 2005-05-25: Found n = 728205, Bo Xiao
• 2005-03-04: Found n = 610737, Bo Xiao
• 2005-01-25: Found n = 509401, Bo Xiao
• 2005-01-14: Found n = 501991, Bo Xiao
• 2000-05-15: Found n = 60243, Phil Carmody
• 2000-05-01: Found n = 55693, Phil Carmody