Riesel primes of the form 653•2n-1

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

Current data

k , b : 653 , 2 Type : Low Count : 23 Nash : 740 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

10, 16, 52, 222, 280, 316, 360, 376, 1836, 2032, 2686, 8980, 21826, 49630, 74830, 106570, 255982, 779536, 1077990, 1377946, 1428280, 1792810, 1862782

History

• 2023-01-21: Reserved by NPLB Drive 18, for 2000000<n<3000000
• 2023-01-21: Checked to n = 2000000, NPLB Drive 14, released
• 2022-12-17: Found n = 1862782, Max Dettweiler
• 2022-08-24: Found n = 1792810, Oliver Kruse
• 2016-05-05: Found n = 1428280, Max Dettweiler
• 2014-11-23: Found n = 1377946, Lennart Vogel
• 2012-03-13: Found n = 1077990, 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
• 2010-11-09: Found n = 779536, Brian Lody
• 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
• 2002-01-22: Found n = 255982, Mark Rodenkirch
• 2001-09-13: Found n = 106570, Mark Rodenkirch