Riesel primes of the form 395•2n-1

Current data

k , b : 395 , 2 Count : 48 Nash : 1838 Max n : 2,000,000 Date : 2013-05-22

2, 8, 16, 18, 28, 34, 36, 60, 82, 178, 260, 408, 426, 666, 720, 850, 860, 888, 940, 1416, 2152, 3010, 3588, 3704, 6820, 7322, 14970, 24608, 27648, 32306, 48424, 62464, 74692, 85308, 94544, 150266, 295928, 307796, 346282, 370458, 372674, 379448, 401228, 464002, 505000, 983160, 1611672, 1690690

History

• 2013-05-22: Checked to n = 2000000, Ian M. Gunn, released
• 2013-05-03: Found n = 1690690, Ian M. Gunn
• 2013-04-27: Found n = 1611672, Ian M. Gunn
• 2013-04-05: Reserved by Ian M. Gunn, for 1300000<n<2000000
• 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
• 2009-02-10: Checked to n = 1000000, Ian M. Gunn, released
• 2009-01-09: Found n = 983160, Ian M. Gunn
• 2009-01-08: Checked to n = 700000, Ian M. Gunn
• 2008-12-18: Reserved by Ian M. Gunn, for 6000000<n<1000000
• 2008-11-10: Checked to n = 600000, NPLB Drive 3, released
• 2008-06-01: 505000 confirmed, Carlos Eduardo Pinho
• 2008-05-02: 464002 confirmed, Gary Barnes
• 2008-03-06: 307796 confirmed, James P. Burt
• 2008-03-06: 295928 confirmed, James P. Burt
• 2008-03-01: Reserved by NPLB Drive 3, for 260000<n<600000
• 2005-10-23: Found n = 464002, Peter O'braian
• 2005-10-12: Found n = 401228, Peter O'braian
• 2005-10-11: Found n = 379448, Peter O'braian
• 2005-10-10: Found n = 372674, Peter O'braian
• 2005-10-10: Found n = 370458, Peter O'braian
• 2005-07-30: Found n = 346282, Peter O'braian
• 2005-07-25: Found n = 307796, Peter O'braian
• 2005-01-12: Found n = 505000, Predrag Minovic
• 2004-10-23: Found n = 295928, Peter O'braian
• 2002-05-14: Found n = 150266, Peter O'braian
• 2001-03-30: Found n = 94544, Kimmo Herranen
• 2001-03-27: Found n = 85308, Kimmo Herranen
• 2001-03-22: Found n = 74692, Kimmo Herranen
• 2001-03-22: Found n = 62464, Kimmo Herranen