Riesel primes of the form 899•2n-1

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

Current data

k , b : 899 , 2 Count : 27 Nash : 1243 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

8, 12, 16, 48, 144, 404, 552, 640, 644, 744, 1260, 7876, 9496, 16956, 20048, 25192, 32444, 40728, 58408, 99820, 115912, 138292, 165792, 284916, 309632, 504372, 1010544

History

• 2023-01-21: Reserved by NPLB Drive 18, for 2000000<n<3000000
• 2023-01-21: Checked to n = 2000000, NPLB Drive 14, released
• 2012-02-19: Found n = 1010544, Lennart Vogel
• 2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
• 2011-07-11: Checked to n = 1000000, NPLB Drive 7, released
• 2008-12-22: Checked to n = 600000, NPLB Drive 1, released
• 2008-12-19: Reserved by NPLB Drive 7, for 600000<n<=1000000
• 2008-07-23: Found n = 504372, Gary Barnes
• 2008-03-25: Checked to n = 333200, NPLB Drive 2, released
• 2008-03-19: Found n = 309632, Laurent Lucas
• 2008-01-22: Reserved by NPLB Drive 2, for 260000<=n<=333200
• 2008-01-21: Reserved by NPLB Drive 1, for 333201<=n<=600000
• 2003-05-14: Found n = 115912, Steven Harvey
• 2002-06-26: Found n = 99820, Andrew J. Rupinski