Riesel primes of the form 793•2n-1

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

Current data

k , b : 793 , 2 Type : Low Count : 22 Nash : 959 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

3, 7, 15, 19, 127, 163, 231, 1303, 1383, 4575, 4819, 6459, 10203, 54259, 350743, 368011, 516715, 649747, 951963, 1157055, 1256511, 1829335

History

• 2022-10-23: Found n = 1829335, Gary Barnes
• 2013-09-29: Found n = 1256511, Gary Barnes
• 2012-04-25: Found n = 1157055, Lennart Vogel
• 2012-02-21: 1019935 not prime, Brian Lody, number was proved composite
• 2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
• 2011-02-08: Checked to n = 1000000, NPLB Drive 6, released
• 2011-01-09: Found n = 951963, Brian Lody
• 2009-05-05: Found n = 649747, David James
• 2008-12-22: Checked to n = 600000, NPLB Drive 1, released
• 2008-12-19: Reserved by NPLB Drive 6, for 600000<n<=1000000
• 2008-08-09: Found n = 516715, Gary Barnes
• 2008-03-25: Checked to n = 333200, NPLB Drive 2, released
• 2008-02-29: Found n = 368011, James P. Burt
• 2008-02-14: Found n = 350743, Gary Barnes
• 2008-01-22: Reserved by NPLB Drive 2, for 260000<=n<=333200
• 2008-01-21: Reserved by NPLB Drive 1, for 333201<=n<=600000