Riesel primes of the form 139•2n-1

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

Current data

k , b : 139 , 2 Count : 56 Nash : 2586 Max n : 2,700,000 Date : 2024-10-04 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

1, 5, 7, 9, 15, 19, 21, 35, 37, 39, 41, 49, 69, 111, 115, 141, 159, 181, 201, 217, 487, 567, 677, 765, 811, 841, 917, 1279, 1407, 1505, 1521, 1587, 2047, 2469, 2649, 3019, 7427, 10257, 33685, 34479, 35177, 43641, 49211, 65031, 84907, 90231, 95021, 124375, 176425, 224947, 382441, 451367, 1016619, 1242661, 1376635, 2751839

History

• 2024-10-26: Found n = 2751839, Florian Piesker, NPLB K300 Drive 1
• 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
• 2015-06-19: Reserved by RPS Megabit Drive 2 for n > 2000000
• 2013-09-08: Checked to n = 2000000, Lennart Vogel, released
• 2013-09-01: Checked to n = 1850000, Lennart Vogel
• 2013-08-28: Checked to n = 1700000, Lennart Vogel
• 2013-08-22: Reserved by Lennart Vogel
• 2013-03-31: Checked to n = 1585000, Carlos Eduardo Pinho, released
• 2013-03-28: Checked n = 1575000 - 1585000, Carlos Eduardo Pinho, results included
• 2013-03-28: Checked n = 1485000 - 1500000, Carlos Eduardo Pinho, results included
• 2013-03-24: Checked n = 1550000 - 1575000, Carlos Eduardo Pinho, results included
• 2013-03-23: Checked n = 1465000 - 1485000, Carlos Eduardo Pinho, results included
• 2013-03-16: Checked n = 1450000 - 1465000, Carlos Eduardo Pinho, results included
• 2013-03-15: Checked n = 1500000 - 1550000, Carlos Eduardo Pinho, results included
• 2013-03-10: Checked to n = 1450000, Carlos Eduardo Pinho, results included
• 2013-02-27: Checked to n = 1430000, Carlos Eduardo Pinho, results included
• 2013-02-21: Checked to n = 1415000, Carlos Eduardo Pinho, results included
• 2013-02-19: Checked to n = 1400000, Carlos Eduardo Pinho, results included
• 2013-02-13: Checked to n = 1385000, Carlos Eduardo Pinho
• 2013-02-09: Found n = 1376635, Carlos Eduardo Pinho
• 2013-01-30: Reserved by Carlos Eduardo Pinho from n=1310000
• 2012-07-02: Checked to n = 1260000, Predrag Minovic
• 2012-05-18: Found n = 1242661, Predrag Minovic
• 2012-05-04: Checked to n = 1240000, Predrag Minovic
• 2012-03-04: Checked to n = 1200000, Predrag Minovic
• 2011-12-31: Checked to n = 1140000, Predrag Minovic
• 2010-07-18: Checked to n = 1100000, Predrag Minovic
• 2010-01-17: Checked to n = 1020000, Predrag Minovic
• 2010-01-11: Found n = 1016619, Predrag Minovic
• 2009-12-05: Checked to n = 1000000, Predrag Minovic
• 2009-11-03: Checked to n = 930000, Predrag Minovic
• 2009-08-09: Reserved by Predrag Minovic from n=800000
• 2009-01-11: Checked to n = 800000, Gary Barnes, released
• 2008-02-01: Checked to n = 726000, Gary Barnes
• 2008-01-10: Checked to n = 650000, Gary Barnes
• 2007-12-27: Checked to n = 600000, Gary Barnes
• 2007-12-04: Checked to n = 453000, Gary Barnes
• 2007-12-03: Found n = 451367, Gary Barnes
• 2007-12-01: Checked to n = 425500, Gary Barnes
• 2007-11-19: Reserved by Gary Barnes
• 2007-11-19: Checked to n = 400000, Hugo Platzer, released
• 2007-08-07: ?, Hugo Platzer
• 2007-04-12: Reserved by Hugo Platzer
• 2006-03-08: Checked to n = 400000, Tony Galvan, released
• 2006-03-05: Checked to n = 400000, Tony Galvan
• 2006-03-02: Found n = 382441, Tony Galvan
• 2006-02-25: Checked to n = 354727, Tony Galvan
• 2006-02-13: Found n = 224947, Tony Galvan
• 2006-02-11: Reserved by Tony Galvan from n=210000
• 2005-01-10: Checked n = 200000 - 210000, Steven Harvey, released
• 2004-06-19: Found n = 176425, Mark Anderson
• 2004-05-26: Reserved by Mark Anderson for n ≤ 200000
• 1999-11-21: Found n = 43641, Bouk de Water