Riesel primes of the form 173•2n-1

Reserved! This sequence is currently part of Multi Reservation 7: NPLB K300 Drive 1.

Current data

k , b : 173 , 2 Count : 41 Nash : 1999 Max n : 2,800,000 Date : 2024-11-13 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

2, 4, 6, 16, 32, 50, 76, 80, 96, 104, 162, 212, 230, 260, 480, 612, 1044, 1440, 1910, 2488, 3140, 3628, 5284, 6332, 7494, 9762, 27100, 29632, 37732, 44036, 47284, 65970, 116870, 145956, 360004, 409470, 483932, 632000, 828808, 1098914, 1504740

History

• 2024-05-16: Reserved by NPLB K300 Drive 1 for n > 2300000
• 2022-04-10: Checked to n = 2300000, RPS Megabit Drive 2
• 2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
• 2019-08-18: Checked to n = 2200000, RPS Megabit Drive 2
• 2013-05-14: Found n = 1504740, Predrag Minovic, RPS Megabit Drive 2
• 2011-06-12: Found n = 1098914, Adam Sutton, RPS Megabit Drive 2
• 2011-04-28: Reserved by RPS Megabit Drive 2 for n > 1000000
• 2009-08-27: Checked to n = 1017000, Michael Kwok, results included, released
• 2008-09-10: Reserved by Michael Kwok
• 2007-07-23: Checked n = 210000 - 1000000, Predrag Minovic
• 2007-05-07: Found n = 828808, Predrag Minovic
• 2007-02-19: Found n = 632000, Predrag Minovic
• 2007-01-08: Found n = 483932, Predrag Minovic
• 2006-12-17: Found n = 409470, Predrag Minovic
• 2006-12-17: Checked to n = 385000, Predrag Minovic
• 2006-10-20: Reserved by Predrag Minovic
• 2006-02-17: Found n = 360004, David Underbakke
• 2005-01-12: Checked to n = 210000, Steven Harvey, released
• 2005-01-10: Reserved by Steven Harvey
• 2004-08-03: Checked to n = 200000, Steven Harvey, released
• 2004-08-01: Checked to n = 196050, Steven Harvey
• 2004-07-26: Checked to n = 181000, Steven Harvey
• 2004-07-19: Reserved by Steven Harvey
• 1999-11-03: Found n = 47284, Joe DeMaio
• 1999-11-03: Found n = 44036, Joe DeMaio
• 1999-11-02: Found n = 37732, Joe DeMaio