Riesel primes of the form 399•2n-1

Reserved! This sequence is currently part of Multi Reservation 26: NPLB Drive 19.

Current data

k , b : 399 , 2 Type : 3 Count : 55 Nash : 2695 Max n : 3,100,000 Date : 2024-08-15 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

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

• 2022-06-03: Reserved by NPLB Drive 16, for 2000000<n<3000000
• 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