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Riesel primes of the form 689•2ⁿ-1

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Revision as of 14:00, 10 March 2023 by Gd barnes (talk | contribs) (add history)

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

Current data

`k` , `b` :	689 , 2
Count :	22
Nash :	1038
Max `n` :	2,200,000
Date :	2024-07-30
Reserved :	No Prime Left BehindNo Prime Left Behind/Reserved

8, 12, 100, 104, 440, 656, 864, 2840, 13416, 16532, 19980, 21220, 62024, 79224, 126120, 250036, 460772, 875428, 893028, 1204032, 1512316, 1919392

History

2023-01-21: Reserved by NPLB Drive 18, for 2000000<n<3000000
2023-01-21: Checked to n = 2000000, NPLB Drive 14, released
2023-01-03: Found n = 1919392, Max Dettweiler
2018-06-05: Found n = 1512316, Max Dettweiler
2012-06-24: Found n = 1204032, Brian Lody
2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
2011-02-08: Checked to n = 1000000, NPLB Drive 6, released
2011-01-03: Found n = 893028, Brian Lody
2010-12-30: Found n = 875428, Ricky L. Hubbard
2008-12-22: Checked to n = 600000, NPLB Drive 1, released
2008-12-19: Reserved by NPLB Drive 6, for 600000<n<=1000000
2008-06-16: Found n = 460772, Gary Barnes
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
2005-10-13: Found n = 250036, Steven Harvey
2003-08-13: Found n = 126120, Steven Harvey
2001-07-01: Found n = 79224, Kimmo Herranen

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