Riesel primes of the form 111•2n-1

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

Current data

k , b : 111 , 2 Type : 3 Count : 68 Nash : 2954 Max n : 3,100,000 Date : 2020-11-12 Reserved : Riesel Prime SearchRiesel Prime Search/Reserved

2, 3, 6, 7, 21, 22, 23, 26, 29, 31, 58, 59, 67, 78, 83, 146, 159, 162, 165, 183, 262, 511, 718, 815, 1181, 1255, 1422, 1506, 1541, 1734, 2213, 3623, 4223, 4551, 5741, 5878, 6599, 11349, 12102, 17811, 19798, 20559, 26887, 32499, 40626, 43151, 49194, 52859, 98462, 101962, 126754, 133062, 147346, 217034, 279227, 345867, 362466, 378595, 448102, 520923, 602565, 656935, 791502, 959671, 1570718, 1946322, 2150802, 3060238

History

• 2024-04-18: Checked n = 2600000 - 2601487, Gary Barnes, 62 tests
• 2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
• 2020-11-12: Found n = 3060238, Thomas Ritschel, RPS Megabit Drive 1
• 2018-04-11: Checked to n = 3000000, RPS Megabit Drive 1
• 2014-08-12: Reserved by RPS Megabit Drive 1 for n ≥ 2601487
• 2014-08-12: Checked to n = 2600000, Thomas Ritschel, released
• 2014-02-28: Checked to n = 2500000, Thomas Ritschel
• 2013-10-01: Checked to n = 2250000, Thomas Ritschel
• 2013-04-27: Found n = 2150802, Thomas Ritschel
• 2013-04-23: Checked to n = 2100000, Thomas Ritschel
• 2013-03-25: Checked n = 1400000 - 1750000, Michael Curtis
• 2012-12-28: Checked n = 1750000 - 2000000, Thomas Ritschel
• 2012-11-29: Found n = 1946322, Thomas Ritschel
• 2012-11-28: Found n = 1570718, Michael Curtis
• 2012-10-30: Checked n = 1750000 - 1850000, Thomas Ritschel
• 2012-05-04: Checked to n = 1400000, Michael Curtis
• 2011-12-04: Checked to n = 1110000, Michael Curtis, n=1200000-1380000 done
• 2011-04-08: Checked to n = 1090000, Michael Curtis
• 2010-10-20: Reserved by Michael Curtis
• 2009-07-30: Reserved by Borys Jaworski for sieving only n=1000000-5000000
• 2008-01-07: Checked to n = 1000000, Michael Curtis, released
• 2007-12-07: Found n = 959671, Michael Curtis
• 2007-11-21: none, Michael Curtis
• 2007-10-24: none, Michael Curtis
• 2007-09-10: none, Michael Curtis
• 2007-06-06: Checked to n = 900000, Michael Curtis
• 2007-05-21: Found n = 791502, Michael Curtis
• 2007-05-09: Checked to n = 780000, Michael Curtis
• 2007-04-11: Checked to n = 750000, Michael Curtis
• 2007-03-10: Checked to n = 720000, Michael Curtis
• 2007-02-03: Reserved by Michael Curtis
• 2007-02-02: Checked to n = 700000, Thomas Masser, released
• 2005-10-05: Checked to n = 700000, Thomas Masser
• 2005-06-13: Found n = 602565, Thomas Masser
• 2005-05-31: Found n = 656935, Thomas Masser
• 2005-05-21: Found n = 520923, Thomas Masser
• 2005-03-16: Found n = 448102, Thomas Masser
• 2005-03-14: Found n = 378595, Thomas Masser
• 2005-03-10: Found n = 362466, Thomas Masser
• 2005-03-02: Found n = 345867, Thomas Masser
• 2005-01-06: Checked to n = 300000, Thomas Masser
• 2005-01-04: Checked n = 200000  -  <300000, Thomas Masser
• 2004-12-03: Found n = 217034, Thomas Masser
• 2004-08-19: Found n = 279227, Thomas Masser
• 2000-03-25: Found n = 147346, Ingo Buechel, Wilfrid Keller
• 1999-09-21: Found n = 133062, Ingo Buechel, Wilfrid Keller
• 1999-07-29: Found n = 126754, Ingo Buechel, Wilfrid Keller
• 1999-04-17: Found n = 101962, Ingo Buechel, Wilfrid Keller
• 1999-04-06: Found n = 98462, Ingo Buechel, Wilfrid Keller
• 1999-01-02: Found n = 52859, Ingo Buechel, Wilfrid Keller
• 1998-12-30: Found n = 49194, Ingo Buechel, Wilfrid Keller
• 1998-12-26: Found n = 43151, Ingo Buechel, Wilfrid Keller
• 1998-12-25: Found n = 40626, Ingo Buechel, Wilfrid Keller
• 1998-05-11: Found n = 32499, Henri Lifchitz
• 1998-05-10: Found n = 26887, Henri Lifchitz
• 1998-05-08: Found n = 20559, Henri Lifchitz
• 1998-05-08: Found n = 19798, Henri Lifchitz
• 1998-05-08: Found n = 17811, Henri Lifchitz