Riesel primes of the form 979•2n-1

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

Current data

k , b : 979 , 2 Count : 43 Nash : 2241 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

5, 7, 11, 21, 31, 35, 39, 45, 77, 87, 99, 113, 155, 195, 227, 471, 1245, 1607, 2437, 2451, 3001, 5591, 6765, 8347, 9699, 10611, 27357, 27797, 32793, 35411, 44493, 50971, 66577, 69839, 82257, 158471, 238391, 257317, 357019, 455801, 458927, 667087, 803865

History

• 2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
• 2011-07-11: Checked to n = 1000000, NPLB Drive 7, released
• 2011-03-05: Found n = 803865, Chris Chatfield
• 2009-04-12: Found n = 667087, Ian M. Gunn
• 2008-12-22: Checked to n = 600000, NPLB Drive 1, released
• 2008-12-19: Reserved by NPLB Drive 7, for 600000<n<=1000000
• 2008-05-26: Found n = 458927, Gary Barnes
• 2008-05-25: Found n = 455801, Lennart Vogel
• 2008-03-25: Checked to n = 333200, NPLB Drive 2, released
• 2008-02-17: Found n = 357019, 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
• 2004-10-21: Found n = 257317, Peter Benson
• 2004-10-20: Found n = 238391, Peter Benson