Riesel primes of the form 469•2n-1

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

Current data

k , b : 469 , 2 Count : 27 Nash : 1554 Max n : 2,820,000 Date : 2024-03-09 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

1, 51, 267, 295, 451, 879, 1385, 4839, 4925, 6279, 30449, 33571, 45879, 58989, 60399, 75057, 213987, 214327, 243635, 297955, 447377, 739729, 892371, 1012299, 1105345, 1200635, 1717297

History

• 2022-08-10: Checked to n = 2000000, NPLB Drive 13, released
• 2022-08-09: Reserved by NPLB Drive 17, for 2000000<n<3000000
• 2022-03-29: Found n = 1717297, Göran Schmidt
• 2013-04-16: Found n = 1200635, Gary Barnes
• 2012-01-19: Found n = 1105345, Vaughan Davies
• 2011-08-04: Reserved by NPLB Drive 13, for 1000000<n<2000000
• 2011-07-29: Found n = 1012299, Chris Chatfield
• 2010-11-11: Checked to n = 1000000, NPLB Drive 5
• 2010-08-22: Found n = 892371, Karsten Bonath
• 2009-11-23: Found n = 739729, Gary Barnes
• 2008-12-22: Checked to n = 600000, NPLB Drive 1
• 2008-12-19: Reserved by NPLB Drive 5, for 600000<n<1000000
• 2008-05-25: Found n = 447377, Lennart Vogel
• 2008-03-25: Checked to n = 333200, NPLB Drive 2
• 2008-01-22: Reserved by NPLB Drive 2, for 260000<=n<=333200
• 2008-01-21: Reserved by NPLB Drive 1, for 333201<=n<=600000
• 2005-04-06: Found n = 243635, Valerie Vonck
• 2004-11-08: Found n = 214327, Steven Harvey
• 2004-11-08: Found n = 213987, Steven Harvey
• 2001-05-27: Found n = 75057, Brian Ball