Riesel primes of the form 5•2n-1

Reserved! This sequence is currently reserved by: Ryan Propper

Current data

k , b : 5 , 2 Count : 50 Nash : 2180 Max n : 10,000,000 Date : 2021-09-27 Reserved : Ryan PropperRyan Propper/Reserved

2, 4, 8, 10, 12, 14, 18, 32, 48, 54, 72, 148, 184, 248, 270, 274, 420, 1340, 1438, 1522, 1638, 1754, 1884, 2014, 2170, 2548, 2622, 2652, 2704, 13510, 21738, 25624, 41934, 51478, 52540, 53230, 172300, 245728, 350028, 1194164, 2460482, 3059698, 3090860, 3264650, 3569154, 5429494, 7037188, 7755002, 10349000, 10495620

Remarks :

Forum thread at MersenneForum The sequence A001770 in OEIS

History

• 2021-09-27: Checked to n = 10000000, Ryan Propper
• 2021-09-27: Found n = 10495620, Ryan Propper
• 2021-09-27: Found n = 10349000, Ryan Propper
• 2021-09-22: Found n = 7755002, Ryan Propper
• 2021-09-22: Found n = 7037188, Ryan Propper
• 2021-09-17: Reserved by Ryan Propper
• 2021-09-17: Checked to n = 6000000, Riesel Prime Search
• 2021-03-21: Checked n = 1-1000000, Gary Barnes, double check, results included
• 2017-01-13: Found n = 5429494, Dmitry Domanov
• 2013-07-08: Found n = 3264650, Carlos Eduardo Pinho
• 2012-04-11: Found n = 3090860, Michael Curtis
• 2009-01-05: Found n = 3569154, Peter Benson
• 2008-11-24: Found n = 3059698, Peter Benson
• 2008-11-19: Found n = 2460482, Peter Benson
• 2008-02-01: Checked to n = 1252000, Gary Barnes
• 2008-01-20: Found n = 1194164, Adam Sutton, Ed Goforth
• 2007-12-27: Checked to n = 1158700, Gary Barnes
• 2004-05-01: Found n = 350028, Phil Carmody
• 2004-05-01: Found n = 245728, Phil Carmody
• 1999-12-25: Found n = 172300, Ingo Buechel, Wilfrid Keller
• 1998-12-18: Found n = 53230, Ingo Buechel, Wilfrid Keller
• 1998-12-18: Found n = 52540, Ingo Buechel, Wilfrid Keller
• 1998-12-18: Found n = 51478, Ingo Buechel, Wilfrid Keller
• 1998-08-31: Found n = 41934, Wilfrid Keller
• 1998-07-28: Found n = 25624, Wilfrid Keller
• 1998-05-29: Found n = 21738, Henri Lifchitz