Riesel primes of the form 511•2n-1

Reserved! This sequence is currently part of Multi Reservation 8: NPLB Drive 17.

Current data

k , b : 511 , 2 Count : 61 Nash : 3080 Max n : 2,820,000 Date : 2024-03-09 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

1, 7, 9, 11, 15, 23, 31, 67, 103, 105, 113, 121, 127, 149, 231, 357, 471, 573, 627, 765, 1135, 1595, 2057, 2099, 3329, 5557, 6087, 10565, 13603, 14287, 14931, 15131, 16591, 17261, 18141, 25925, 27257, 33261, 35123, 37737, 53677, 54373, 58561, 79405, 107065, 111899, 149765, 217861, 219433, 222285, 230267, 257413, 316021, 393673, 592985, 918351, 921397, 924085, 943223, 1051499, 1055989

History

• 2011-11-19: Found n = 1055989, Sascha Beat Dinkel
• 2011-10-06: Found n = 1051499, Sascha Beat Dinkel
• 2011-08-04: Reserved by NPLB Drive 13, for 1000000<n<2000000
• 2010-11-11: Checked to n = 1000000, NPLB Drive 5
• 2010-10-30: Found n = 943223, Ian M. Gunn
• 2010-10-28: Found n = 918351, James P. Burt, found by (jamers)
• 2010-10-26: Found n = 924085, Scott Gilvey
• 2010-10-19: Found n = 921397, Marco Micheli
• 2008-12-22: Checked to n = 600000, NPLB Drive 1
• 2008-12-19: Reserved by NPLB Drive 5, for 600000<n<1000000
• 2008-12-17: Found n = 592985, Gary Barnes
• 2008-03-25: Checked to n = 333200, NPLB Drive 2
• 2008-03-20: Found n = 393673, Gary Barnes
• 2008-01-22: Reserved by NPLB Drive 2, for 260000<=n<=333200
• 2008-01-21: Reserved by NPLB Drive 1, for 333201<=n<=600000
• 2004-11-08: Found n = 257413, Steven Harvey
• 2004-11-05: Found n = 230267, Steven Harvey
• 2004-11-04: Found n = 222285, Steven Harvey
• 2004-11-04: Found n = 219433, Steven Harvey
• 2004-11-04: Found n = 217861, Steven Harvey
• 2001-09-11: Found n = 149765, Andy Hedges
• 2001-07-11: Found n = 111899, Andy Hedges
• 2001-07-11: Found n = 107065, Andy Hedges
• 2001-07-03: Found n = 79405, Andy Hedges