Riesel primes of the form 65•2n-1

Reserved! This sequence is currently part of Multi Reservation 4: RPS Megabit Drive 1.

Current data

k , b : 65 , 2 Count : 43 Nash : 2034 Max n : 3,100,000 Date : 2020-11-12 Reserved : Riesel Prime SearchRiesel Prime Search/Reserved

4, 6, 12, 22, 28, 52, 78, 94, 124, 162, 174, 192, 204, 304, 376, 808, 930, 972, 1714, 1776, 2176, 2568, 4392, 4728, 5548, 8046, 12474, 26856, 27156, 45240, 52026, 134598, 179658, 185946, 578512, 647130, 1374574, 1421088, 1505640, 2450614, 2583720, 2876718, 3080952

History

• 2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
• 2020-11-12: Found n = 3080952, Thomas Ritschel, RPS Megabit Drive 1
• 2018-04-11: Checked n = 1000000 - 1620000, 1669972 - 3000000, RPS Megabit Drive 1
• 2016-12-30: Found n = 2876718, Thomas Ritschel, RPS Megabit Drive 1
• 2015-11-08: Found n = 2583720, Thomas Ritschel, RPS Megabit Drive 1
• 2014-02-04: Found n = 2450614, Predrag Minovic, RPS Megabit Drive 1
• 2011-03-11: Found n = 1505640, Larry Soule, RPS Megabit Drive 1
• 2011-02-14: Found n = 1421088, Peter Benson, RPS Megabit Drive 1
• 2011-01-30: Found n = 1374574, Larry Soule, RPS Megabit Drive 1
• 2010-10-24: Reserved by RPS Megabit Drive 1 for n > 1000000
• 2009-07-30: Reserved by Borys Jaworski for sieving only n=1700000-5000000
• 2008?: Checked n = 1620000 - 1669972, Peter Benson See range done at web archive.
• 2008-09-10: Checked to n = 1000000, Gary Barnes, released
• 2008-09-07: Reserved by Gary Barnes
• 2007-03-05: Checked to n = 989600, 65*2^n-1 thread, released
• 2006-08-02: Found n = 647130, J. Craig Brunson
• 2005-09-18: Found n = 578512, Thomas Richard
• 2005-09-03: Reserved by 65*2^n-1 thread for n > 420000
• 2005-09-03: Checked to n = 430000, Ingmar Goudt
• 2005-08-11: Checked to n = 418000, Ingmar Goudt
• 2005-06-29: Checked to n = 395000, Ingmar Goudt
• 2005-06-14: Checked to n = 380000, Ingmar Goudt
• 2005-05-26: Checked to n = 365000, Ingmar Goudt
• 2005-04-26: Reserved by Ingmar Goudt
• 2005-03-29: Checked to n = 310000, Ingmar Goudt, released
• 2005-03-27: Checked to n = 305000, Ingmar Goudt
• 2005-03-14: Checked to n = 267000, Ingmar Goudt
• 2005-02-28: Reserved by Ingmar Goudt
• 2004-08-01: Checked to n = 210000, Steven Harvey, released
• 2004-07-26: Reserved by Steven Harvey from n=200000
• 2004-05-26: Reserved by Mark Anderson for n ≤ 200000
• 2002-09-04: Found n = 185946, Peter Grobstich
• 2002-08-28: Found n = 179658, Peter Grobstich
• 2002-07-29: Found n = 134598, Peter Grobstich