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Riesel primes of the form 419•2ⁿ-1

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

Current data

`k` , `b` :	419 , 2
Type :	Low
Count :	11
Nash :	627
Max `n` :	2,820,000
Date :	2024-03-09
Reserved :	No Prime Left BehindNo Prime Left Behind/Reserved

4, 24, 132, 9744, 40848, 44544, 178708, 237028, 255288, 885792, 2401672

History

2023-05-18: Found n = 2401672, 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
2011-08-04: Reserved by NPLB Drive 13, for 1000000<n<2000000
2010-11-11: Checked to n = 1000000, NPLB Drive 5
2010-08-19: Found n = 885792, Gary Barnes
2008-12-22: Checked to n = 600000, NPLB Drive 1
2008-12-19: Reserved by NPLB Drive 5, for 600000<n<1000000
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
2004-10-11: Found n = 255288, Peter O'braian
2004-10-11: Found n = 237028, Peter O'braian
2002-10: Found n = 178708, Dennis Okon

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