Riesel primes of the form 841•2n-1

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

Current data

k , b : 841 , {{{Rb}}} Count : 16 Nash : 946 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

7, 55, 91, 227, 251, 295, 751, 4777, 5935, 11849, 12497, 28471, 31609, 47339, 585467, 1307465

[[Category:Riesel {{{Rb}}}|#.....00841]][[Category:Riesel {{{Rb}}} Low-weight|#.....00841]]

History

• 2014-04-18: Found n = 1307465, Gary Barnes
• 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
• 2008-12-09: Found n = 585467, 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