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Riesel primes of the form 433•2ⁿ-1

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Reserved! This sequence is currently part of Multi Reservation 8: NPLB Drive 17.

Current data

`k` , `b` :	433 , 2
Count :	25
Nash :	1522
Max `n` :	2,820,000
Date :	2024-03-09
Reserved :	No Prime Left BehindNo Prime Left Behind/Reserved

3, 27, 39, 71, 99, 307, 327, 487, 539, 931, 1103, 1279, 2295, 2763, 3615, 6815, 15779, 21375, 189431, 284943, 431115, 1259831, 1583059, 1745267, 2423839

History

2023-05-31: Found n = 2423839, Florian Piesker
2022-08-10: Checked to n = 2000000, NPLB Drive 13, released
2022-08-09: Reserved by NPLB Drive 17, for 2000000<n<3000000
2022-04-07: Found n = 1745267, Florian Piesker
2018-11-28: Found n = 1583059, Dmitry Domanov
2013-06-27: Found n = 1259831, Gary Barnes
2011-08-04: Reserved by NPLB Drive 13, for 1000000<n<2000000
2010-11-11: Checked to n = 1000000, NPLB Drive 5
2008-12-22: Checked to n = 600000, NPLB Drive 1
2008-12-19: Reserved by NPLB Drive 5, for 600000<n<1000000
2008-05-13: Found n = 431115, Carlos Eduardo Pinho
2008-03-25: Checked to n = 333200, NPLB Drive 2
2008-01-22: Reserved by NPLB Drive 2, for 260000<=n<=333200
2008-01-21: Reserved by NPLB Drive 1, for 333201<=n<=600000
2005-02-27: Found n = 284943, Peter O'braian
2004-10-12: Found n = 189431, Steven Harvey

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