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Riesel primes of the form 239•2ⁿ-1

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Reserved! This sequence is currently reserved by: Thomas Ritschel

Current data

`k` , `b` :	239 , 2
Type :	Low
Count :	7
Nash :	388
Max `n` :	7,000,000
Date :	2020-06-22
Reserved :	Thomas RitschelThomas Ritschel/Reserved

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

History

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
2008-10-19: Checked to n = 1010000, Predrag Minovic
2008-10-07: Reserved by Predrag Minovic
2008-09-09: Reserved by NPLB Drive 4
2006-04-15: Found n = 356300, Larry Soule
1998-11-26: Found n = 25780, Wilfrid Keller

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