Riesel primes of the form 179•2n-1

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

Current data

k , b : 179 , 2 Type : Low Count : 14 Nash : 779 Max n : 2,800,000 Date : 2024-11-13 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

8, 68, 108, 20780, 25488, 25656, 38684, 57096, 159108, 236856, 490800, 507816, 1464720, 1636808

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
• 2014-05-03: Found n = 1636808, Serge Batalov, RPS Megabit Drive 2
• 2012-10-17: Found n = 1464720, Predrag Minovic, RPS Megabit Drive 2
• 2011-04-28: Reserved by RPS Megabit Drive 2 for n > 1000000
• 2009-07-30: Reserved by Borys Jaworski for sieving only n=1000000-5000000
• 2008-10-22: Checked to n = 1000000, NPLB Drive 4, released
• 2008-10-17: Checked to n = 1000000, Michael Curtis
• 2008-09-12: Reserved by Michael Curtis
• 2008-09-09: Reserved by NPLB Drive 4
• 2006-08-13: Checked to n = 600000, RPS Drive 2, released
• 2006-06-18: Found n = 507816, Predrag Minovic, RPS Drive 2
• 2006-06-07: Found n = 490800, Larry Soule, RPS Drive 2
• 2006-03-22: Found n = 236856, Larry Soule, RPS Drive 2
• 2006-03-17: Reserved by RPS Drive 2, for n = 210000 - 600000
• 2005-01-12: Checked to n = 210000, Steven Harvey, released
• 2005-01-10: Reserved by Steven Harvey
• 2004-06-06: Checked to n = 200000, Thomas Masser, released
• 2004-05-25: Reserved by Thomas Masser
• 2000-05-23: Found n = 57096, Tom Kuechler
• 1998-07-29: Found n = 25656, Wilfrid Keller
• 1998-07-29: Found n = 25488, Wilfrid Keller
• 1998-07-29: Found n = 20780, Wilfrid Keller