Riesel primes of the form 791•2n-1

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

Current data

k , b : 791 , 2 Count : 20 Nash : 1273 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

2, 10, 22, 30, 38, 42, 74, 158, 662, 1742, 1890, 5562, 11678, 61178, 116654, 141874, 576238, 855098, 976970, 1327974

History

• 2023-01-21: Reserved by NPLB Drive 18, for 2000000<n<3000000
• 2023-01-21: Checked to n = 2000000, NPLB Drive 14, released
• 2014-07-27: Found n = 1327974, Max Dettweiler
• 2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
• 2011-02-08: Checked to n = 1000000, NPLB Drive 6, released
• 2011-01-12: Found n = 976970, Ricky L. Hubbard
• 2010-12-10: Found n = 855098, Brian Lody
• 2008-12-22: Checked to n = 600000, NPLB Drive 1, released
• 2008-12-19: Reserved by NPLB Drive 6, for 600000<n<=1000000
• 2008-12-02: Found n = 576238, Ian M. Gunn
• 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
• 2003-12-06: Found n = 141874, Dennis Okon
• 2003-05-01: Found n = 116654, Steven Harvey