Riesel primes of the form 841•2ⁿ-1

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

Current data

`k` , `b` :	841 , 2
Type :	Low
Count :	18
Nash :	946
Max `n` :	2,170,000
Date :	2024-04-02
Reserved :	No Prime Left BehindNo Prime Left Behind/Reserved

7, 55, 91, 227, 251, 295, 751, 4777, 5935, 11849, 12497, 28471, 31609, 47339, 585467, 1307465, 1616507, 1999951

2023-01-21: Reserved by NPLB Drive 18, for 2000000<n<3000000
2023-01-21: Checked to n = 2000000, NPLB Drive 14, released
2023-01-21: Found n = 1999951, Max Dettweiler
2021-08-23: Found n = 1616507, Gary Barnes, originally found by Max Dettweiler
2014-04-18: Found n = 1307465, Gary Barnes
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
2008-12-09: Found n = 585467, Ian M. Gunn
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