Riesel primes of the form 383•2n-1

Current data

k , b : 383 , {{{Rb}}} Count : 39 Nash : 1926 Max n : 2,000,000 Date : 2014-12-28

2, 8, 12, 16, 38, 46, 52, 120, 136, 242, 252, 296, 326, 556, 736, 978, 1018, 3950, 4046, 5898, 6440, 7906, 14012, 22682, 28212, 42120, 50692, 76312, 99148, 106852, 159180, 160258, 172968, 285892, 608340, 736876, 1091332, 1716780, 1794636

[[Category:Riesel {{{Rb}}}|#.....00383]]

History

• 2014-12-28: Checked to n = 2000000, NPLB Maxi Drive 1, released
• 2014-10-19: Found n = 1794636, Lennart Vogel
• 2014-09-20: Found n = 1716780, Göran Schmidt
• 2014-08-20: Reserved by NPLB Maxi Drive 1, for 1610000<n<2000000
• 2013-04-28: Reserved by NPLB Maxi Drive 1, for 1300000<n<2000000
• 2013-02-24: Found n = 1091332, Stuart Mullage
• 2013-01-14: Reserved by NPLB Maxi Drive 1, for 1000000<n<1300000
• 2009-08-14: Checked to n = 1000000, Ian M. Gunn, released
• 2009-07-20: Checked to n = 960000, Ian M. Gunn
• 2009-06-28: Checked to n = 917000, Ian M. Gunn
• 2009-06-09: Checked to n = 877000, Ian M. Gunn
• 2009-05-25: Checked to n = 844000, Ian M. Gunn
• 2009-05-12: Checked to n = 812000, Ian M. Gunn
• 2009-04-23: Checked to n = 761000, Ian M. Gunn
• 2009-04-15: Found n = 736876, Ian M. Gunn
• 2009-04-11: Checked to n = 725000, Ian M. Gunn
• 2009-03-20: Checked to n = 662000, Ian M. Gunn
• 2009-03-08: Found n = 608340, Ian M. Gunn
• 2009-03-08: Reserved by Ian M. Gunn, for 600000<n<1000000
• 2008-11-10: Checked to n = 600000, NPLB Drive 3, released
• 2008-03-06: 285892 confirmed, James P. Burt
• 2008-03-01: Reserved by NPLB Drive 3, for 260000<n<600000
• 2005-01-06: Found n = 285892, Peter O'braian
• 2004-02-22: Found n = 172968, Peter O'braian
• 2004-02-22: Found n = 160258, Peter O'braian
• 2004-02-22: Found n = 159180, Peter O'braian
• 2001-03-07: Found n = 106852, Kimmo Herranen
• 2001-03-07: Found n = 99148, Kimmo Herranen
• 2001-03-07: Found n = 76312, Kimmo Herranen