Riesel primes of the form 747•2n-1

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

Current data

k , b : 747 , 2 Type : 3 Count : 68 Nash : 2785 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

1, 6, 8, 9, 13, 33, 34, 46, 61, 97, 98, 101, 177, 190, 209, 312, 362, 378, 384, 574, 630, 810, 813, 1189, 1269, 1613, 1641, 1649, 1870, 1961, 2286, 2994, 3224, 4349, 4909, 5061, 8289, 8589, 8818, 9037, 11501, 12477, 14070, 14881, 16398, 17697, 20350, 25554, 33357, 35961, 44118, 51424, 68949, 105728, 111133, 174593, 179757, 247272, 253098, 311013, 333709, 430297, 610126, 750169, 1532798, 1614261, 1694602, 1879749

History

• 2023-01-21: Reserved by NPLB Drive 18, for 2000000<n<3000000
• 2023-01-21: Checked to n = 2000000, NPLB Drive 14, released
• 2022-12-22: Found n = 1879749, Max Dettweiler
• 2022-03-14: Found n = 1694602, Gary Barnes
• 2021-07-31: Found n = 1614261, Gary Barnes
• 2019-01-22: Found n = 1532798, Max Dettweiler
• 2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
• 2011-02-08: Checked to n = 1000000, NPLB Drive 6, released
• 2010-04-30: Found n = 750169, Gary Barnes
• 2009-01-02: Found n = 610126, Laurent Lucas
• 2008-12-22: Checked to n = 600000, NPLB Drive 1, released
• 2008-12-19: Reserved by NPLB Drive 6, for 600000<n<=1000000
• 2008-05-11: Found n = 430297, Karsten Bonath
• 2008-03-25: Checked to n = 333200, NPLB Drive 2, released
• 2008-01-22: Found n = 333709, Karsten Bonath
• 2008-01-22: Reserved by NPLB Drive 2, for 260000<=n<=333200
• 2008-01-21: Reserved by NPLB Drive 1, for 333201<=n<=600000
• 2005-10-23: Found n = 253098, Steven Harvey
• 2005-10-23: Found n = 247272, Steven Harvey
• 2004-09-15: Found n = 179757, Steven Harvey
• 2004-09-14: Found n = 174593, Steven Harvey
• 2001-11-05: Found n = 111133, Kimmo Herranen
• 2001-11-01: Found n = 105728, Kimmo Herranen