Riesel primes of the form 399•2n-1

Current data

k , b : 399 , 2 Type : 3 Count : 55 Nash : 2695 Max n : 2,000,000 Date : 2014-08-20

1, 3, 7, 11, 24, 33, 35, 55, 83, 104, 111, 179, 363, 428, 655, 929, 2215, 2408, 2451, 2721, 3271, 4511, 4748, 6601, 8568, 8624, 11348, 14780, 15563, 15767, 16515, 19575, 23336, 23648, 25681, 30171, 44681, 53360, 63351, 83084, 85737, 93601, 148681, 194184, 290555, 341641, 496100, 629840, 768439, 906480, 1293056, 1418376, 1659001, 1764851, 1839019

History

• 2014-08-20: Checked to n = 2000000, NPLB Mini Drive 5, released
• 2014-08-09: Found n = 1839019, Lennart Vogel
• 2014-08-04: Found n = 1764851, Lennart Vogel
• 2014-07-09: Found n = 1659001, Ian M. Gunn
• 2013-11-06: Found n = 1418376, Ian M. Gunn
• 2013-08-17: Reserved by NPLB Mini Drive 5, for 1300000<n<2000000
• 2010-09-25: Found n = 1293056, Ian M. Gunn
• 2010-09-07: Checked to n = 1300000, Ian M. Gunn, released
• 2010-07-12: Checked to n = 1200000, Ian M. Gunn
• 2010-05-18: Checked to n = 1100000, Ian M. Gunn
• 2010-03-21: Reserved by Ian M. Gunn, for 1000000<n<1300000
• 2009-02-18: Checked to n = 1000000, Ian M. Gunn, released
• 2009-01-31: Found n = 768439, Ian M. Gunn
• 2009-01-20: Checked to n = 700000, Ian M. Gunn
• 2009-01-03: Found n = 629840, Ian M. Gunn
• 2008-12-29: Found n = 906480, Ian M. Gunn
• 2008-12-24: Reserved by Ian M. Gunn, for 600000<n<1000000
• 2008-11-10: Checked to n = 600000, NPLB Drive 3, released
• 2008-04-04: Found n = 496100, Peter O'braian
• 2008-03-06: 290555 confirmed, James P. Burt
• 2008-03-01: Found n = 341641, Karsten Bonath
• 2008-03-01: Reserved by NPLB Drive 3, for 260000<n<600000
• 2004-10-28: Found n = 290555, Peter O'braian
• 2003-08-26: Found n = 194184, Peter O'braian
• 2003-08-13: Found n = 148681, Peter O'braian
• 2001-02-22: Found n = 93601, Kimmo Herranen
• 2001-02-20: Found n = 85737, Kimmo Herranen
• 2001-02-20: Found n = 83084, Kimmo Herranen
• 1999-10-22: Found n = 63351, Dale Andrews
• 1999-10-14: Found n = 44681, Dale Andrews
• 1998-11-10: Found n = 53360, Joe Eversole
• 1998-11-03: Found n = 30171, Thomas Nokleby
• 1998-11-03: Found n = 25681, Thomas Nokleby
• 1998-11-03: Found n = 23648, Thomas Nokleby
• 1998-11-03: Found n = 23336, Thomas Nokleby
• 1998-11-03: Found n = 19575, Thomas Nokleby