Riesel primes of the form 883•2n-1

Reserved! This sequence is currently part of Multi Reservation 3: NPLB Drive 18.

Current data

k , b : 883 , {{{Rb}}} Count : 16 Nash : 705 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

7, 19, 35, 107, 131, 2039, 2611, 14131, 16831, 38611, 42919, 49427, 72151, 115531, 501779, 894155

[[Category:Riesel {{{Rb}}}|#.....00883]][[Category:Riesel {{{Rb}}} Low-weight|#.....00883]]

History

• 2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
• 2011-07-11: Checked to n = 1000000, NPLB Drive 7, released
• 2011-04-10: Found n = 894155, Rick Reynolds
• 2008-12-22: Checked to n = 600000, NPLB Drive 1, released
• 2008-12-19: Reserved by NPLB Drive 7, for 600000<n<=1000000
• 2008-07-13: 501779 confirmed, Gary Barnes
• 2008-03-25: Checked to n = 333200, NPLB Drive 2, released
• 2008-01-22: Reserved by NPLB Drive 2, for 260000<=n<=333200
• 2008-01-21: Reserved by NPLB Drive 1, for 333201<=n<=600000
• 2007-04-22: Found n = 501779, Dale Andrews
• 2003-05-09: Found n = 115531, Steven Harvey
• 1998-07-03: Found n = 14131, Henri Lifchitz