Riesel primes of the form 833•2n-1

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

Current data

k , b : 833 , 2 Count : 41 Nash : 1777 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

2, 4, 8, 20, 30, 34, 64, 102, 130, 134, 342, 494, 1266, 1880, 2050, 2104, 2368, 2648, 3070, 3712, 5142, 5804, 5970, 10460, 17102, 28550, 30858, 54378, 70982, 115294, 151076, 204106, 278950, 322530, 329490, 351146, 373286, 383528, 970796, 1054916, 1771960

History

• 2023-01-21: Reserved by NPLB Drive 18, for 2000000<n<3000000
• 2023-01-21: Checked to n = 2000000, NPLB Drive 14, released
• 2022-07-24: Found n = 1771960, Gary Barnes
• 2012-02-27: Found n = 1054916, Gary Barnes
• 2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
• 2011-07-11: Checked to n = 1000000, NPLB Drive 7, released
• 2011-06-10: Found n = 970796, Gary Barnes
• 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
• 2008-03-17: Found n = 383528, James P. Burt
• 2008-03-07: Found n = 373286, Gary Barnes
• 2008-02-14: Found n = 351146, Carlos Eduardo Pinho
• 2008-01-22: Reserved by NPLB Drive 2, for 260000<=n<=333200
• 2008-01-21: Reserved by NPLB Drive 1, for 333201<=n<=600000
• 2005-01-24: Found n = 204106, Jun Tajima
• 2003-05-05: Found n = 115294, Steven Harvey