Riesel primes of the form 709•2n-1

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

Current data

k , b : 709 , 2 Count : 24 Nash : 1312 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

69, 379, 1179, 1527, 2325, 2631, 3139, 3669, 4003, 4819, 6663, 6991, 10939, 42735, 43665, 52671, 72819, 81595, 92215, 139995, 538623, 675411, 689023, 1663963

History

• 2023-01-21: Reserved by NPLB Drive 18, for 2000000<n<3000000
• 2023-01-21: Checked to n = 2000000, NPLB Drive 14, released
• 2022-02-11: Found n = 1663963, Gary Barnes
• 2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
• 2011-02-08: Checked to n = 1000000, NPLB Drive 6, released
• 2009-05-31: Found n = 689023, Gary Barnes
• 2009-05-16: Found n = 675411, Gary Barnes
• 2008-12-22: Checked to n = 600000, NPLB Drive 1, released
• 2008-12-19: Reserved by NPLB Drive 6, for 600000<n<=1000000
• 2008-10-27: Found n = 538623, Gary Barnes
• 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
• 2001-09-04: Found n = 139995, Kimmo Herranen
• 2001-08-30: Found n = 92215, Kimmo Herranen
• 2001-08-30: Found n = 81595, Kimmo Herranen