Riesel primes of the form 239•2ⁿ-1

Current data

4, 92, 25780, 104956, 140116, 356300, 2421404

2022-04-10: Checked to n = 8000000, Thomas Ritschel, released
2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
2020-06-22: Checked to n = 7000000, Thomas Ritschel
2019-12-17: Checked to n = 6000000, Thomas Ritschel
2019-09-28: Checked to n = 5000000, Thomas Ritschel
2018-09-17: Found n = 2421404, Thomas Ritschel
2018-05-20: Reserved by Thomas Ritschel
2014-10-05: Checked to n = 2000000, Predrag Minovic, released
2013-07-09: Checked to n = 2000000, Predrag Minovic
2013-01-04: Checked to n = 1860000, Predrag Minovic
2012-07-02: Checked to n = 1500000, Predrag Minovic
2010-06-05: Checked to n = 1330000, Predrag Minovic
2010-05-04: Checked to n = 1290000, Predrag Minovic
2009-11-03: Checked to n = 1200000, Predrag Minovic
2008-10-22: Checked to n = 1000000, NPLB Drive 4, released
2008-10-19: Checked to n = 1010000, Predrag Minovic
2008-10-07: Reserved by Predrag Minovic
2008-09-09: Reserved by NPLB Drive 4
2006-08-13: Checked to n = 600000, RPS Drive 2, released
2006-04-15: Found n = 356300, Larry Soule, RPS Drive 2
2006-03-17: Reserved by RPS Drive 2, for n = 210000 - 600000
2005-01-10: Checked n = 200000 - 210000, Steven Harvey, released
2004-04-29: Reserved by Thomas Masser
1998-11-26: Found n = 25780, Wilfrid Keller