Riesel primes of the form 873•2n-1

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

Current data

k , b : 873 , 2 Type : 3 Count : 53 Nash : 3115 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

2, 3, 4, 6, 15, 22, 24, 30, 40, 46, 52, 60, 87, 90, 92, 96, 123, 211, 302, 475, 523, 823, 880, 1126, 1399, 1462, 2112, 2470, 2672, 4200, 5096, 5683, 9231, 9414, 16567, 16980, 18799, 31224, 35486, 37832, 44251, 65176, 137650, 176792, 218380, 243502, 685480, 708190, 893012, 1165494, 1193802, 1263679, 1394076

History

• 2023-01-21: Reserved by NPLB Drive 18, for 2000000<n<3000000
• 2023-01-21: Checked to n = 2000000, NPLB Drive 14, released
• 2015-03-08: Found n = 1394076, James P. Burt
• 2013-11-02: Found n = 1263679, Max Dettweiler
• 2012-06-12: Found n = 1193802, Brian Lody
• 2012-04-28: Found n = 1165494, Brian Lody
• 2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
• 2011-07-11: Checked to n = 1000000, NPLB Drive 7, released
• 2011-04-09: Found n = 893012, Lennart Vogel
• 2009-08-12: Found n = 708190, Ian M. Gunn
• 2009-05-20: Found n = 685480, Ian M. Gunn
• 2008-12-22: Checked to n = 600000, NPLB Drive 1, released
• 2008-12-19: Reserved by NPLB Drive 7, for 600000<n<=1000000
• 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
• 2005-05-16: Found n = 243502, Peter Benson
• 2005-03-01: Found n = 218380, Steven Harvey
• 2004-08-16: Found n = 176792, Steven Harvey
• 2003-11-14: Found n = 137650, Steven Harvey