Riesel primes of the form 181•2n-1

Reserved! This sequence is currently part of Multi Reservation 5: CRUS Liskovets-Gallot.

Current data

k , b : 181 , 2 Count : 69 Nash : 2940 Max n : 5,000,000 Date : 2023-07-11 Reserved : Conjectures 'R UsConjectures 'R Us/Reserved

3, 5, 7, 9, 11, 17, 23, 31, 35, 43, 47, 83, 85, 99, 101, 195, 267, 281, 363, 391, 519, 623, 653, 673, 701, 1091, 1147, 1565, 3273, 3661, 3923, 4127, 4783, 5267, 5345, 5747, 6151, 6299, 7569, 9033, 11843, 14139, 14175, 15779, 21557, 32295, 49823, 60979, 65195, 132367, 133895, 186827, 212647, 268299, 293551, 308759, 327407, 334579, 400849, 458303, 491487, 553989, 563997, 655067, 823853, 1032023, 1186763, 1250169, 1281453

History

• 2019-08-18: Checked to n = 2200000, RPS Megabit Drive 2
• 2015-06-19: Reserved by RPS Megabit Drive 2 for n > 2000000
• 2014-10-05: Checked to n = 2000000, Predrag Minovic, released
• 2013-09-08: Checked to n = 1800000, Predrag Minovic
• 2013-07-09: Checked to n = 1760000, Predrag Minovic
• 2013-01-04: Checked to n = 1650000, Predrag Minovic
• 2012-07-02: Checked to n = 1440000, Predrag Minovic
• 2012-05-04: Checked to n = 1385000, Predrag Minovic
• 2011-12-31: Checked to n = 1350000, Predrag Minovic
• 2011-12-13: Found n = 1250169, Predrag Minovic
• 2011-10-14: Found n = 1281453, Thomas Ritschel
• 2011-10-12: Found n = 1186763, Predrag Minovic
• 2010-07-18: Checked to n = 1100000, Predrag Minovic
• 2010-04-11: Checked to n = 1050000, Predrag Minovic
• 2010-02-18: Found n = 1032023, Predrag Minovic
• 2010-02-11: Checked to n = 1020000, Predrag Minovic
• 2010-01-17: Checked to n = 1010000, Predrag Minovic
• 2009-12-05: Checked to n = 920000, Predrag Minovic
• 2009-11-20: Checked to n = 900000, Predrag Minovic
• 2009-11-18: Reserved by Predrag Minovic
• 2009-11-18: Checked to n = 898000, Larry Soule
• 2007-07-23: Checked to n = 892000, Larry Soule
• 2007-04-11: Found n = 823853, Larry Soule
• 2006-10-31: Found n = 655067, Larry Soule
• 2006-07-13: Found n = 563997, Predrag Minovic
• 2006-07-05: Found n = 553989, Larry Soule
• 2006-06-07: Found n = 491487, David Metcalfe
• 2006-05-21: Found n = 458303, Predrag Minovic
• 2006-05-07: Found n = 400849, Predrag Minovic
• 2006-04-17: Found n = 334579, Valerie Vonck
• 2006-04-10: Found n = 327407, Larry Soule
• 2006-04-06: Found n = 308759, Larry Soule
• 2006-04-01: Found n = 293551, David Metcalfe
• 2006-03-28: Found n = 268299, Larry Soule
• 2004-08-17: Found n = 186827, Jocelyn Larouche
• 2000-01-16: Found n = 65195, Dale Andrews
• 2000-01-10: Found n = 60979, Dale Andrews
• 2000-01-10: Found n = 49823, Dale Andrews
• 1999-04-19: Found n = 32295, Dale Andrews