Riesel primes of the form 917•2n-1

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

Current data

k , b : 917 , 2 Count : 39 Nash : 1785 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

6, 10, 14, 30, 54, 160, 280, 466, 750, 774, 870, 1006, 1506, 2290, 3446, 3626, 4554, 8016, 8914, 10434, 13760, 14864, 16566, 24402, 28970, 32486, 32986, 40310, 43946, 44376, 47600, 80694, 82214, 121846, 215634, 673570, 1167682, 1847872, 1854642

History

• 2022-12-07: Found n = 1854642, Gary Barnes, originally found by Max Dettweiler
• 2022-11-27: Found n = 1847872, Göran Schmidt
• 2012-04-29: Found n = 1167682, Brian Lody
• 2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
• 2011-07-11: Checked to n = 1000000, NPLB Drive 7, released
• 2009-04-26: Found n = 673570, 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
• 2008-01-22: Reserved by NPLB Drive 2, for 260000<=n<=333200
• 2008-01-21: Reserved by NPLB Drive 1, for 333201<=n<=600000
• 2005-03-18: Found n = 215634, Steven Harvey
• 2003-08-18: Found n = 121846, James S. Griffin