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Riesel primes of the form 697•2ⁿ-1

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

Current data

`k` , `b` :	697 , 2
Type :	Low
Count :	9
Nash :	562
Max `n` :	2,200,000
Date :	2024-07-30
Reserved :	No Prime Left BehindNo Prime Left Behind/Reserved

5, 41, 53, 317, 1961, 56153, 106073, 873197, 1670657

History

2022-02-19: Found n = 1670657, Timothy Sorbera
2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
2011-02-08: Checked to n = 1000000, NPLB Drive 6, released
2010-12-28: Found n = 873197, Vaughan Davies
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
2001-04-30: Found n = 106073, Kimmo Herranen

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