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Riesel primes of the form 839•2ⁿ-1

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Reserved! This sequence is currently part of Multi Reservation 3: NPLB Drive 18.

Current data

`k` , `b` :	839 , 2
Type :	Low
Count :	19
Nash :	909
Max `n` :	2,200,000
Date :	2024-07-30
Reserved :	No Prime Left BehindNo Prime Left Behind/Reserved

8, 40, 56, 88, 128, 180, 360, 376, 1100, 1888, 2460, 3276, 8556, 9288, 36556, 67296, 288848, 1063280, 2181920

History

2024-05-21: Found n = 2181920, Göran Schmidt, NPLB Drive 18
2023-01-21: Reserved by NPLB Drive 18, for 2000000<n<3000000
2023-01-21: Checked to n = 2000000, NPLB Drive 14, released
2012-03-03: Found n = 1063280, Brian Lody, NPLB Drive 14
2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
2011-07-11: Checked to n = 1000000, NPLB Drive 7, released
2008-12-22: Checked to n = 600000, NPLB Drive 1, released
2008-12-19: Reserved by NPLB Drive 7, for 600000<n<=1000000
2008-03-25: Checked to n = 333200, NPLB Drive 2, released
2008-01-22: Reserved by NPLB Drive 2, for 260000<=n<=333200
2008-01-21: Reserved by NPLB Drive 1, for 333201<=n<=600000

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