Riesel primes of the form 481•2n-1

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

Current data

k , b : 481 , {{{Rb}}} Count : 42 Nash : 1850 Max n : 2,820,000 Date : 2024-03-09 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

3, 5, 9, 13, 15, 33, 55, 69, 75, 285, 439, 835, 895, 909, 1095, 1105, 1109, 3685, 5223, 5705, 5813, 6385, 7969, 11153, 14615, 15979, 17195, 21605, 25389, 46529, 120665, 136885, 214573, 215839, 239785, 259363, 262603, 479573, 684665, 958909, 1182519, 1374765

[[Category:Riesel {{{Rb}}}|#.....00481]]

History

• 2014-10-05: Found n = 1374765, Johnathan Chu
• 2013-03-22: Found n = 1182519, Gary Barnes
• 2011-08-04: Reserved by NPLB Drive 13, for 1000000<n<2000000
• 2010-11-11: Checked to n = 1000000, NPLB Drive 5
• 2010-10-31: Found n = 958909, Vaughan Davies
• 2009-05-17: Found n = 684665, David James
• 2008-12-22: Checked to n = 600000, NPLB Drive 1
• 2008-12-19: Reserved by NPLB Drive 5, for 600000<n<1000000
• 2008-06-22: Found n = 479573, Lennart Vogel
• 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
• 2005-11-01: Found n = 259363, James S. Griffin
• 2005-09-02: Found n = 239785, Steven Harvey
• 2004-11-10: Found n = 215839, Steven Harvey
• 2004-11-10: Found n = 214573, Steven Harvey
• 2003-06-18: Found n = 120665, Steven Harvey