Riesel primes of the form 811•2n-1

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

Current data

k , b : 811 , 2 Count : 33 Nash : 1329 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

1, 5, 9, 19, 21, 29, 53, 129, 413, 863, 1369, 2503, 3985, 4049, 5041, 5741, 7463, 8733, 8885, 8893, 10109, 12209, 13233, 20171, 32301, 134593, 137453, 154405, 337833, 401111, 1010419, 1089349, 2023885

History

• 2023-03-09: Found n = 2023885, Max Dettweiler, NPLB Drive 18
• 2023-01-21: Reserved by NPLB Drive 18, for 2000000<n<3000000
• 2023-01-21: Checked to n = 2000000, NPLB Drive 14, released
• 2012-03-24: Found n = 1089349, Gary Barnes
• 2012-02-19: Found n = 1010419, Pietari Snow
• 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
• 2008-03-25: Checked to n = 333200, NPLB Drive 2, released
• 2008-03-08: Found n = 401111, James P. Burt
• 2008-01-24: Found n = 337833, Carlos Eduardo Pinho
• 2008-01-22: Reserved by NPLB Drive 2, for 260000<=n<=333200
• 2008-01-21: Reserved by NPLB Drive 1, for 333201<=n<=600000
• 2002-06-30: Found n = 137453, Dennis Okon
• 2002-06-30: Found n = 134593, Dennis Okon