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Riesel primes of the form 389•2ⁿ-1

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Current data

`k` , `b` :	389 , 2
Type :	Low
Count :	10
Nash :	613
Max `n` :	2,000,000
Date :	2013-03-10

20, 84, 104, 140, 360, 512, 1620, 4620, 93336, 149820

History

2013-03-10: Checked to n = 2000000, Ian M. Gunn, released
2013-02-16: Reserved by Ian M. Gunn, to n=2000000
2010-09-26: Checked to n = 1300000, Ian M. Gunn, released
2010-09-01: Reserved by Ian M. Gunn, for 1000000<n<1300000
2008-12-03: Checked to n = 1000000, Ian M. Gunn, released
2008-11-25: Checked to n = 800000, Ian M. Gunn
2008-11-19: Checked to n = 700000, Ian M. Gunn
2008-11-17: Checked to n = 632000, Ian M. Gunn, some other ranges
2008-11-14: Reserved by Ian M. Gunn, for 600000<n<1000000
2008-11-10: Checked to n = 600000, NPLB Drive 3, released
2008-03-01: Reserved by NPLB Drive 3, for 260000<n<600000
2002-06-10: Found n = 149820, Andrew J. Rupinski
1999-11-21: Found n = 93336, Dale Andrews

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