Riesel primes of the form 677•2n-1

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

Current data

k , b : 677 , 2 Count : 40 Nash : 2226 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

2, 4, 18, 52, 152, 170, 194, 200, 448, 506, 644, 860, 2176, 2632, 4000, 4360, 5014, 5150, 7130, 12860, 13316, 16354, 17036, 18694, 23432, 24110, 24394, 35930, 44578, 94422, 101432, 110286, 283496, 357334, 418000, 598310, 951134, 1179464, 1272716, 1819216

History

• 2022-10-06: Found n = 1819216, Gary Barnes
• 2013-11-26: Found n = 1272716, Gary Barnes
• 2012-05-17: Found n = 1179464, Brian Lody
• 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 = 951134, Gary Barnes
• 2008-12-22: Checked to n = 600000, NPLB Drive 1, released
• 2008-12-19: Reserved by NPLB Drive 6, for 600000<n<=1000000
• 2008-12-06: Found n = 598310, Carlos Eduardo Pinho
• 2008-05-02: Found n = 418000, Gary Barnes
• 2008-03-25: Checked to n = 333200, NPLB Drive 2, released
• 2008-02-17: Found n = 357334, 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
• 2003-04-16: Found n = 110286, Steven Harvey
• 2002-12-16: Found n = 101432, Steven Harvey
• 2002-02-19: Found n = 94422, Andrew J. Rupinski