Riesel primes of the form 809•2n-1

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

Current data

k , b : 809 , {{{Rb}}} Count : 12 Nash : 339 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

12, 36, 48, 120, 216, 252, 1836, 26136, 37512, 43212, 137052, 764580

[[Category:Riesel {{{Rb}}}|#.....00809]][[Category:Riesel {{{Rb}}} Low-weight|#.....00809]]

History

• 2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
• 2011-07-11: Checked to n = 1000000, NPLB Drive 7, released
• 2010-11-21: Found n = 764580, Karsten Bonath
• 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
• 2001-12-07: Found n = 137052, Torbjörn Alm