Riesel primes of the form 39•2n-1

Current data

k , b : 39 , 2 Type : 3 Count : 28 Nash : 1213 Max n : 5,482,000 Date : 2024-03-18

3, 24, 105, 153, 188, 605, 795, 813, 839, 2135, 2619, 4053, 8333, 15519, 16025, 16505, 30684, 40700, 43683, 52233, 142205, 222345, 225333, 292839, 322613, 747219, 781220, 2251104

Remarks :

The sequence A050545 in OEIS

History

• 2024-03-18: Checked to n = 5482000, Michael Kwok, released
• 2022-07-10: Checked to n = 5482000, Michael Kwok, results included
• 2021-05-05: Checked to n = 5256000, Michael Kwok, results included
• 2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
• 2019-05-24: Checked to n = 4848000, Michael Kwok, results included
• 2018-12-30: Checked to n = 4750000, Michael Kwok, results included
• 2017-09-27: Checked to n = 4520000, Michael Kwok, results included
• 2017-06-22: Checked to n = 4310000, Michael Kwok, results included
• 2017-04-29: More results, Michael Kwok
• 2017-04-29: Checked to n = 4050000, Michael Kwok, results included
• 2015-11-11: Found n = 2251104, Michael Kwok
• 2013-10-06: Reserved by Michael Kwok
• 2013-10-05: Checked to n = 2000000, Larry Soule
• 2013-10-02: Skipped n=1263000-1700000, Larry Soule
• 2013-10-02: Reserved by Michael Kwok
• 2013-10-01: Checked to n = 2000000, Larry Soule, released
• 2012-03-26: Checked to n = 1700000, Larry Soule
• 2008-02-05: Checked to n = 1263000, Larry Soule
• 2007-12-13: Checked to n = 1220000, Larry Soule
• 2007-09-10: Checked to n = 1135000, Larry Soule
• 2006-09-17: Found n = 781220, Larry Soule
• 2006-07-12: Found n = 747219, Larry Soule
• 2004-05-15: Found n = 322613, Thomas Ritschel
• 2004-05-11: Found n = 292839, Thomas Ritschel
• 2004-05-04: Found n = 225333, Thomas Ritschel
• 2004-05-04: Found n = 222345, Thomas Ritschel
• 2003-10-01: Found n = 142205, Richard Kapek
• 1998-11-08: Found n = 52233, Kimmo Herranen
• 1998-11-05: Found n = 43683, Kimmo Herranen
• 1998-11-04: Found n = 40700, Kimmo Herranen
• 1998-07-28: Found n = 30684, Wilfrid Keller
• 1998-04-11: Found n = 16025, Ray Ballinger