Riesel primes of the form 617•2n-1

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

Current data

k , b : 617 , 2 Count : 26 Nash : 1340 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

2, 4, 8, 14, 76, 92, 104, 116, 188, 274, 436, 632, 644, 988, 1514, 1708, 7034, 15728, 15872, 94748, 147022, 193822, 431464, 695452, 1175468, 1451432

History

• 2023-01-21: Reserved by NPLB Drive 18, for 2000000<n<3000000
• 2023-01-21: Checked to n = 2000000, NPLB Drive 14, released
• 2017-04-15: Found n = 1451432, Max Dettweiler
• 2012-05-10: 1175468 confirmed, Brian Lody
• 2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
• 2011-02-08: Checked to n = 1000000, NPLB Drive 6, released
• 2008-12-22: Checked to n = 600000, NPLB Drive 1, released
• 2008-12-19: Reserved by NPLB Drive 6, for 600000<n<=1000000
• 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
• 2007-12-02: Checked to n = 1200000, Borys Jaworski
• 2007-10-21: Checked to n = 1100000, Borys Jaworski
• 2007-11-13: Found n = 1175468, Borys Jaworski
• 2006-10-10: Found n = 695452, Borys Jaworski
• 2006-05-10: Found n = 431464, Borys Jaworski
• 2002-12-19: Found n = 193822, Dennis Okon
• 2002-12-19: Found n = 147022, Dennis Okon
• 2002-06-15: Found n = 94748, Kimmo Herranen