Riesel primes of the form 715•2n-1

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

Current data

k , b : 715 , 2 Count : 28 Nash : 1019 Max n : 2,170,000 Date : 2024-04-02 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

1, 13, 55, 71, 91, 113, 125, 191, 301, 323, 385, 965, 1393, 3347, 4211, 8567, 14737, 15673, 19061, 22385, 40565, 57667, 177895, 244967, 336041, 358013, 520195, 965837

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
• 2011-02-08: Checked to n = 1000000, NPLB Drive 6, released
• 2011-01-14: Found n = 965837, David Stevens
• 2008-12-22: Checked to n = 600000, NPLB Drive 1, released
• 2008-12-19: Reserved by NPLB Drive 6, for 600000<n<=1000000
• 2008-06-21: Found n = 520195, Lennart Vogel
• 2008-03-25: Checked to n = 333200, NPLB Drive 2, released
• 2008-02-28: Found n = 358013, Matt Mills
• 2008-01-28: Found n = 336041, 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
• 2005-10-05: Found n = 244967, Steven Harvey
• 2004-10-16: Found n = 177895, Steven Harvey