Riesel primes of the form 377•2n-1

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

Current data

k , b : 377 , 2 Count : 39 Nash : 2175 Max n : 3,100,000 Date : 2024-08-15 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

10, 16, 20, 38, 58, 90, 100, 106, 180, 218, 260, 516, 740, 1530, 1828, 2240, 2280, 2860, 3040, 4628, 9146, 15266, 22728, 46766, 50120, 68146, 75144, 102348, 208344, 223558, 277810, 376274, 463086, 465986, 850160, 1483586, 2050148, 2262094, 2607856

History

• 2023-03-07: Reserved by NPLB Drive 19, for 3000000<n<4000000
• 2023-03-07: Checked to n = 3000000, NPLB Drive 16, released
• 2023-02-07: Found n = 2607856, Max Dettweiler
• 2023-01-22: Found n = 2262094, Max Dettweiler
• 2022-06-24: Found n = 2050148, Stuart Mullage
• 2022-06-03: Reserved by NPLB Drive 16, for 2000000<n<3000000
• 2014-12-28: Checked to n = 2000000, NPLB Maxi Drive 1, released
• 2014-08-20: Reserved by NPLB Maxi Drive 1, for 1610000<n<2000000
• 2013-10-10: Found n = 1483586, Ian M. Gunn
• 2013-04-28: Reserved by NPLB Maxi Drive 1, for 1300000<n<2000000
• 2013-01-14: Reserved by NPLB Maxi Drive 1, for 1000000<n<1300000
• 2009-10-01: Checked to n = 1000000, Ian M. Gunn, released
• 2009-08-30: Checked to n = 954000, Ian M. Gunn
• 2009-08-14: Checked to n = 932000, Ian M. Gunn
• 2009-07-20: Checked to n = 895000, Ian M. Gunn
• 2009-06-28: Found n = 850160, Ian M. Gunn
• 2009-06-28: Checked to n = 850000, Ian M. Gunn
• 2009-06-09: Checked to n = 824000, Ian M. Gunn
• 2009-05-25: Checked to n = 800000, Ian M. Gunn
• 2009-05-12: Checked to n = 773000, Ian M. Gunn
• 2009-04-23: Checked to n = 727000, Ian M. Gunn
• 2009-04-11: Checked to n = 698000, Ian M. Gunn
• 2009-03-20: Checked to n = 633000, Ian M. Gunn
• 2009-03-01: Reserved by Ian M. Gunn, for 600000<n<1000000
• 2008-11-10: Checked to n = 600000, NPLB Drive 3, released
• 2008-05-02: 465986 confirmed, Gary Barnes
• 2008-05-02: 463086 confirmed, Gary Barnes
• 2008-03-01: Reserved by NPLB Drive 3, for 260000<n<600000
• 2005-12-11: Found n = 465986, Peter O'braian
• 2005-12-11: Found n = 463086, Peter O'braian
• 2005-08-17: Found n = 376274, Peter O'braian
• 2005-03-21: Found n = 277810, Peter O'braian
• 2004-10-19: Found n = 223558, Peter O'braian
• 2004-03-18: Found n = 208344, Peter O'braian
• 2001-12-26: Found n = 102348, Kimmo Herranen
• 2001-03-09: Found n = 68146, Kimmo Herranen