Riesel primes of the form 947•2n-1

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

Current data

k , b : 947 , {{{Rb}}} Count : 13 Nash : 906 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

6, 24, 36, 408, 474, 1788, 1816, 5704, 13932, 217242, 425076, 470602, 1012854

[[Category:Riesel {{{Rb}}}|#.....00947]][[Category:Riesel {{{Rb}}} Low-weight|#.....00947]]

History

• 2012-02-19: Found n = 1012854, 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
• 2008-06-06: Found n = 470602, James P. Burt
• 2008-05-15: Found n = 425076, Timothy Sorbera
• 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
• 2005-02-05: Found n = 217242, Peter Benson