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Riesel primes of the form 647•2ⁿ-1

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

Current data

`k` , `b` :	647 , 2
Count :	18
Nash :	1090
Max `n` :	2,170,000
Date :	2024-04-02
Reserved :	No Prime Left BehindNo Prime Left Behind/Reserved

10, 20, 22, 92, 138, 166, 286, 310, 508, 870, 906, 1930, 9820, 13260, 18510, 158710, 159500, 184150

History

2023-01-21: Reserved by NPLB Drive 18, for 2000000<n<3000000
2023-01-21: Checked to n = 2000000, NPLB Drive 14, released
2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
2011-02-08: Checked to n = 1000000, NPLB Drive 6, released
2008-12-22: Checked to n = 600000, NPLB Drive 1, released
2008-12-19: Reserved by NPLB Drive 6, 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
2003-10-15: Found n = 184150, Marcin Lipinski
2003-10-12: Found n = 159500, Marcin Lipinski
2003-10-12: Found n = 158710, Marcin Lipinski

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