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Riesel primes of the form 991•2ⁿ-1

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Revision as of 09:23, 22 April 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` :	991 , 2
Count :	22
Nash :	1185
Max `n` :	2,200,000
Date :	2024-07-30
Reserved :	No Prime Left BehindNo Prime Left Behind/Reserved

3, 11, 47, 101, 107, 177, 269, 333, 821, 917, 1619, 2801, 7821, 13773, 16083, 23157, 51717, 217065, 219107, 220497, 290981, 519993

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
2011-07-11: 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
2008-08-18: Found n = 519993, 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
2004-10-10: Found n = 220497, Peter Benson
2004-10-10: Found n = 219107, Peter Benson
2004-10-10: Found n = 217065, Peter Benson

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