Riesel primes of the form 955•2n-1

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

Current data

k , b : 955 , 2 Count : 44 Nash : 2375 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

3, 5, 9, 11, 15, 17, 25, 29, 39, 53, 105, 147, 351, 399, 593, 873, 1573, 2105, 5399, 6081, 6959, 8271, 11193, 15629, 17151, 19433, 24325, 30821, 36241, 40917, 51879, 64623, 68017, 75721, 91201, 103849, 164499, 207291, 250961, 256203, 505151, 521891, 1463821, 1865553

History

• 2022-12-18: Found n = 1865553, Max Dettweiler
• 2017-07-17: Found n = 1463821, Max Dettweiler
• 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
• 2008-08-19: Found n = 521891, Gary Barnes
• 2008-06-19: Found n = 505151, James P. Burt
• 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
• 2005-01-22: Found n = 256203, Peter Benson
• 2005-01-22: Found n = 250961, Peter Benson