Riesel primes of the form 687•2n-1

Reserved! This sequence is currently part of Multi Reservation 3: NPLB Drive 18.

Current data

k , b : 687 , {{{Rb}}} Count : Attention! Parameter RCount=28 not given! Nash : 1496 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

1, 13, 34, 37, 40, 61, 109, 128, 238, 265, 298, 550, 688, 1232, 4312, 7132, 9092, 9548, 25369, 26264, 33298, 35113, 37021, 39772, 80137, 383254, 931420, 1318064

[[Category:Riesel {{{Rb}}}|#.....00687]]

History

• 2014-06-03: Found n = 1318064, Gary Barnes
• 2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
• 2011-02-08: Checked to n = 1000000, NPLB Drive 6, released
• 2011-01-06: Found n = 931420, Steve Martin
• 2008-12-22: Checked to n = 600000, NPLB Drive 1, released
• 2008-12-19: Reserved by NPLB Drive 6, for 600000<n<=1000000
• 2008-03-25: Checked to n = 333200, NPLB Drive 2, released
• 2008-03-17: Found n = 383254, James P. Burt
• 2008-01-22: Reserved by NPLB Drive 2, for 260000<=n<=333200
• 2008-01-21: Reserved by NPLB Drive 1, for 333201<=n<=600000