Riesel primes of the form 445•2n-1

Reserved! This sequence is currently part of Multi Reservation 8: NPLB Drive 17.

Current data

k , b : 445 , 2 Count : 24 Nash : 1245 Max n : 2,820,000 Date : 2024-03-09 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

3, 11, 17, 81, 479, 983, 1649, 2603, 3087, 4091, 8999, 13493, 17051, 24465, 69471, 70823, 121403, 139293, 242051, 256779, 268131, 351615, 901305, 910881

History

• 2022-08-10: Checked to n = 2000000, NPLB Drive 13, released
• 2022-08-09: Reserved by NPLB Drive 17, for 2000000<n<3000000
• 2011-08-04: Reserved by NPLB Drive 13, for 1000000<n<2000000
• 2010-11-11: Checked to n = 1000000, NPLB Drive 5
• 2010-10-10: Found n = 910881, Scott Gilvey
• 2010-09-01: Found n = 901305, Gary Barnes
• 2008-12-22: Checked to n = 600000, NPLB Drive 1
• 2008-12-19: Reserved by NPLB Drive 5, for 600000<n<1000000
• 2008-03-25: Checked to n = 333200, NPLB Drive 2
• 2008-01-22: Reserved by NPLB Drive 2, for 260000<=n<=333200
• 2008-01-21: Reserved by NPLB Drive 1, for 333201<=n<=600000
• 2005-05-15: Found n = 351615, Peter O'braian
• 2005-03-05: Found n = 268131, Peter O'braian
• 2005-03-04: Found n = 256779, Peter O'braian
• 2005-03-03: Found n = 242051, Peter O'braian