Riesel primes of the form 311•2n-1

Reserved! This sequence is currently part of Multi Reservation 7: NPLB K300 Drive 1.

Current data

k , b : 311 , {{{Rb}}} Count : Attention! Parameter RCount=9 not given! Nash : 442 Max n : 2,800,000 Date : 2024-11-13 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

26, 38, 214, 314, 2758, 17038, 116218, 1581686, 2544778

[[Category:Riesel {{{Rb}}}|#.....00311]][[Category:Riesel {{{Rb}}} Low-weight|#.....00311]]

History

• 2018-11-08: Found n = 2544778, Ricky L. Hubbard
• 2014-12-29: Reserved by NPLB Drive 15, for n=2000000<n<3000000
• 2010-06-26: Checked to n = 2000000, Dmitry Domanov, released
• 2010-03-21: Reserved by Dmitry Domanov, for 1600000<n<2000000
• 2009-07-07: Checked to n = 1600000, Borys Jaworski, released
• 2009-06-30: Checked to n = 1590000, Borys Jaworski
• 2009-06-26: Found n = 1581686, Borys Jaworski
• 2009-05-31: Checked to n = 1570000, Borys Jaworski
• 2009-04-30: Checked to n = 1540000, Borys Jaworski
• 2009-03-18: Checked to n = 1400000, Borys Jaworski
• 2009-01-20: Checked to n = 1160000, Borys Jaworski
• 2008-11-10: Checked to n = 600000, NPLB Drive 3, released
• 2008-09-15: Checked to n = 1000000, Borys Jaworski
• 2008-08-12: Checked to n = 900000, Borys Jaworski
• 2008-07-10: Checked to n = 800000, Borys Jaworski
• 2008-06-09: Checked to n = 700000, Borys Jaworski
• 2008-05-09: Reserved by Borys Jaworski, for 600000<k<1000000
• 2008-03-01: Reserved by NPLB Drive 3, for 260000<n<600000
• 2003-03-21: Found n = 116218, Steven Harvey