Riesel primes of the form 405•2n-1

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

Current data

k , b : 405 , 2 Type : 315 Count : 76 Nash : 4100 Max n : 2,000,000 (2,820,000) Date : 2024-03-09 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

1, 2, 5, 6, 7, 15, 18, 21, 28, 30, 45, 46, 80, 88, 122, 137, 297, 321, 327, 330, 365, 495, 517, 622, 807, 996, 1068, 1252, 1560, 2221, 2301, 2345, 3655, 3753, 4351, 5490, 7772, 12471, 12970, 14306, 14540, 15531, 15873, 17388, 18322, 18430, 19432, 19537, 32420, 33977, 36445, 39520, 75282, 84813, 85136, 92713, 104462, 109496, 155708, 171992, 193516, 229317, 254906, 339385, 375658, 445231, 516432, 634608, 705795, 765777, 902328, 1133886, 1146533, 1399165, 1508592, 2137280

History

• 2020-03-13: Checked to n = 2000000, Michael Curtis
• 2017-08-28: 1508592 confirmed, Timothy Sorbera
• 2016-05-27: Found n = 2137280, Michael Curtis
• 2015-01-30: Found n = 1508592, Michael Curtis
• 2014-12-11: Found n = 1399165, Michael Curtis
• 2013-06-11: Checked to n = 1360000, Michael Curtis
• 2012-09-24: 1146533 confirmed, Lennart Vogel
• 2012-06-08: 1133886 confirmed, David Stevens
• 2012-02-05: Found n = 1133886, Michael Curtis
• 2012-01-18: Found n = 1146533, Michael Curtis
• 2011-08-04: Reserved by NPLB Drive 13, for 1000000<n<2000000
• 2011-06-02: Checked to n = 1100000, Michael Curtis
• 2010-11-11: Checked to n = 1000000, NPLB Drive 5
• 2010-10-28: Checked to n = 1000000, Michael Curtis
• 2010-09-02: 902328 confirmed, Gary Barnes
• 2010-05-25: Found n = 902328, Michael Curtis
• 2010-05-01: 765777 confirmed, (jamers)
• 2010-01-24: Checked to n = 770000, Michael Curtis
• 2010-01-04: Found n = 765777, Michael Curtis
• 2009-08-03: 705795 confirmed, Vaughan Davies
• 2009-04-28: Found n = 705795, Michael Curtis
• 2009-02-16: 634608 confirmed, Gary Barnes
• 2009-02-03: Found n = 634608, Michael Curtis
• 2008-12-24: Checked to n = 600000, Michael Curtis
• 2008-12-22: Checked to n = 600000, NPLB Drive 1
• 2008-12-19: Reserved by NPLB Drive 5, for 600000<n<1000000
• 2008-08-09: 516432 confirmed, Gary Barnes
• 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
• 2007-08-30: Found n = 516432, Michael Curtis
• 2007-07-25: Found n = 445231, Michael Curtis
• 2004-11-28: Found n = 375658, Peter O'braian
• 2004-11-07: Found n = 339385, Peter O'braian
• 2004-09-22: Found n = 254906, Peter O'braian
• 2004-09-17: Found n = 229317, Peter O'braian
• 2003-08-11: Found n = 193516, Peter O'braian
• 2003-08-10: Found n = 171992, Peter O'braian
• 2003-08-10: Found n = 155708, Peter O'braian
• 2002-05-11: Found n = 109496, Peter O'braian
• 2002-04-30: Found n = 104462, Peter O'braian
• 2002-02-21: Found n = 92713, Peter O'braian
• 2001-05-07: Found n = 85136, Steven Harvey
• 2001-05-17: Found n = 84813, Steven Harvey
• 2001-05-01: Found n = 75282, Steven Harvey