Riesel primes of the form 975•2n-1

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

Current data

k , b : 975 , 2 Type : 315 Count : 51 Nash : 3013 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

1, 7, 10, 24, 27, 37, 52, 111, 120, 201, 250, 427, 654, 802, 1014, 1116, 1405, 1461, 1611, 1936, 2100, 2400, 2457, 3094, 3664, 4902, 5112, 5205, 7071, 7305, 12081, 12145, 25194, 33481, 34686, 42274, 51958, 64962, 85681, 116719, 124018, 124939, 151537, 221146, 232467, 458098, 558469, 1085931, 1379278, 1493869, 2181258

History

• 2024-05-18: Found n = 2181258, Göran Schmidt, NPLB Drive 18
• 2023-01-21: Reserved by NPLB Drive 18, for 2000000<n<3000000
• 2023-01-21: Checked to n = 2000000, NPLB Drive 14, released
• 2018-01-22: Found n = 1493869, Max Dettweiler, NPLB Drive 14
• 2014-11-26: Found n = 1379278, Lennart Vogel, NPLB Drive 14
• 2012-03-25: Found n = 1085931, Max Dettweiler, NPLB Drive 14
• 2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
• 2011-07-11: Checked to n = 1000000, NPLB Drive 7, released
• 2008-12-22: Checked to n = 600000, NPLB Drive 1, released
• 2008-12-19: Reserved by NPLB Drive 7, for 600000<n<=1000000
• 2008-11-24: Found n = 558469, Gary Barnes, NPLB Drive 1
• 2008-05-25: Found n = 458098, Max Dettweiler, NPLB Drive 1
• 2008-03-25: Checked to n = 333200, NPLB Drive 2, released
• 2008-01-22: Reserved by NPLB Drive 2, for 260000<=n<=333200
• 2008-01-21: Reserved by NPLB Drive 1, for 333201<=n<=600000
• 2004-10-30: Found n = 232467, Peter Benson
• 2004-10-26: Found n = 221146, Peter Benson
• 2003-05-21: Found n = 116719, Steven Harvey
• 2002-01-20: Found n = 85681, Andrew J. Rupinski