Riesel primes of the form 1741•2n-1

Current data

k , b : 1741 , 2 Count : 55 Nash : 2347 Max n : 1,000,000 Date : 2013-02-19

5, 9, 11, 15, 25, 31, 47, 61, 69, 79, 115, 163, 181, 301, 307, 325, 369, 385, 549, 717, 955, 1325, 1373, 1597, 1837, 2533, 2547, 6305, 6725, 6895, 8713, 11837, 12187, 12831, 18389, 19229, 22831, 23535, 41369, 44433, 51027, 84007, 92727, 145913, 163395, 164393, 313193, 336157, 341083, 392029, 587137, 637157, 855823, 872473, 880129

History

• 2013-02-19: Checked n = 500000 - 1000000, NPLB Drive 10, released
• 2012-08-08: Found n = 880129, Lennart Vogel, NPLB Drive 10
• 2012-08-06: Found n = 872473, Lennart Vogel, NPLB Drive 10
• 2012-07-29: Found n = 855823, Lennart Vogel, NPLB Drive 10
• 2009-06-06: Checked n = 200000 - 350000, NPLB Drive 9B, released
• 2009-05-16: Found n = 637157, Brian Lody, NPLB Drive 10
• 2009-04-30: Found n = 587137, Vaughan Davies, NPLB Drive 10
• 2009-04-07: Checked n = 350000 - 500000, NPLB Drive 8, released
• 2009-03-31: Reserved by NPLB Drive 10, for n = 500000 - 1000000
• 2009-01-28: Checked n = 50000 - 200000, NPLB Drive 9A, released
• 2009-01-24: 392029 confirmed, James P. Burt, NPLB Drive 8
• 2009-01-20: Reserved by NPLB Drive 9B, for n = 200000 - 350000
• 2009-01-05: Reserved by NPLB Drive 9A, for n = 50000 - 200000
• 2008-12-30: Reserved by NPLB Drive 8, for n = 350000 - 500000
• 2008-08-20: Checked n = 35000 - 50000, Karsten Bonath
• 2008-07-29: Checked n = 10000 - 35000, Karsten Bonath
• 2007-12-05: Found n = 392029, Jeffrey Sax
• 2007-07-12: Found n = 336157, Jeffrey Sax
• 2007-07-06: Checked n = 1 - 10000, Gary Barnes
• 2007-07-02: Found n = 341083, Jeffrey Sax
• ?: Found n = 12187, Andrew Walker