Riesel primes of the form 279•2n-1

Reserved! This sequence is currently part of Multi Reservation 7: NPLB K300 Drive 1.

Current data

k , b : 279 , 2 Type : 3 Count : 48 Nash : 2345 Max n : 2,800,000 Date : 2024-11-13 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

1, 4, 12, 29, 35, 56, 77, 93, 209, 221, 412, 441, 460, 899, 1859, 1896, 2504, 5315, 6520, 9324, 9460, 11336, 11760, 12317, 21080, 25029, 27064, 29236, 35396, 42791, 55851, 57752, 61551, 73272, 117820, 123253, 162705, 201152, 277455, 318317, 455704, 479437, 587881, 616044, 1003356, 1116600, 1202283, 1590369

History

• 2024-04-23: Reserved by NPLB K300 Drive 1 for n > 2000000
• 2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
• 2013-04-02: Checked to n = 2000000, Peter Benson, released
• 2013-03-30: Found n = 1590369, Peter Benson
• 2013-03-29: Reserved by Peter Benson from n=1300000
• 2012-05-14: Checked to n = 1300000, James P. Burt, released
• 2012-04-04: Found n = 1202283, James P. Burt
• 2012-02-02: Found n = 1116600, James P. Burt
• 2011-12-31: Checked to n = 1100000, James P. Burt
• 2011-12-10: Reserved by James P. Burt from n=1000000
• 2011-12-05: Found n = 1003356, James P. Burt
• 2009-07-30: Reserved by Borys Jaworski for sieving only n=1000000-5000000
• 2008-07-04: Checked to n = 1000000, RPS Drive 5, released
• 2007-04-18: Found n = 616044, Predrag Minovic, RPS Drive 5
• 2007-04-01: Found n = 587881, Predrag Minovic, RPS Drive 5
• 2007-01-02: Found n = 479437, Thomas Ritschel, RPS Drive 5
• 2007-01-02: Found n = 455704, J. Craig Brunson, RPS Drive 5
• 2006-11-20: Found n = 318317, Larry Soule, RPS Drive 5
• 2006-11-14: Found n = 277455, Larry Soule, RPS Drive 5
• 2006-11-12: Reserved by RPS Drive 5, for n > 260000
• 2005-01-13: Found n = 201152, Steven Harvey
• 2003-07-30: Found n = 123253, Michael Ian Hartley
• 1998-11-25: Found n = 117820, Kimmo Herranen
• 1998-11-09: Found n = 61551, Kimmo Herranen
• 1998-11-07: Found n = 57752, Kimmo Herranen
• 1998-11-07: Found n = 55851, Kimmo Herranen
• 1998-11-03: Found n = 42791, Kimmo Herranen
• 1998-11-02: Found n = 35396, Kimmo Herranen
• 1998-11-01: Found n = 29236, Kimmo Herranen
• 1998-11-01: Found n = 27064, Kimmo Herranen
• 1998-12-04: Found n = 21080, Wilfrid Keller
• 1998-10-31: Found n = 25029, Kimmo Herranen