Riesel primes of the form 905•2n-1

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

Current data

k , b : 905 , {{{Rb}}} Count : 17 Nash : 810 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

4, 16, 40, 60, 244, 516, 520, 708, 1776, 2308, 9568, 10308, 154984, 382036, 652908, 772528, 1742026

[[Category:Riesel {{{Rb}}}|#.....00905]][[Category:Riesel {{{Rb}}} Low-weight|#.....00905]]

History

• 2014-01-09: Found n = 1742026, Kenneth Egtved Pedersen
• 2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
• 2011-07-11: Checked to n = 1000000, NPLB Drive 7, released
• 2011-02-03: Found n = 772528, Vaughan Davies
• 2009-03-13: Found n = 652908, Ian M. Gunn
• 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
• 2008-03-16: Found n = 382036, James P. Burt
• 2008-01-22: Reserved by NPLB Drive 2, for 260000<=n<=333200
• 2008-01-21: Reserved by NPLB Drive 1, for 333201<=n<=600000