Riesel primes of the form 333•2n-1

Reserved! This sequence is currently part of Multi Reservation 26: NPLB Drive 19.

Current data

k , b : 333 , 2 Type : 3 Count : 67 Nash : 2427 Max n : 5,000,000 (3,100,000) Date : 2024-08-15 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

3, 8, 11, 35, 47, 54, 56, 63, 74, 83, 95, 110, 131, 138, 255, 375, 563, 578, 647, 848, 923, 1050, 1244, 1314, 1416, 1590, 1988, 2058, 2259, 3060, 3603, 7278, 7470, 7518, 11067, 11864, 11987, 12711, 14870, 17804, 20543, 31511, 32564, 33804, 44027, 46191, 52295, 61194, 125174, 127539, 138215, 142307, 491436, 710678, 717510, 783927, 832611, 893871, 982086, 1209174, 1474766, 1537644, 1853115, 2412735, 2591874, 2785626, 4846958

History

• 2024-04-02: Reservation dropped, Friedrich Steinwedel
• 2023-03-07: Reserved by NPLB Drive 19, for 3000000<n<4000000
• 2023-02-15: Reserved by Friedrich Steinwedel for n=5000000-5300000
• 2023-02-15: Checked n = 4000000 - 5000000, Friedrich Steinwedel
• 2022-06-03: Checked to n = 3000000, NPLB Drive 15, released
• 2022-05-17: Found n = 4846958, Friedrich Steinwedel
• 2022-03-22: Reserved by Friedrich Steinwedel for n=4000000-5000000
• 2022-03-22: Checked n = 3300000 - 4000000, Friedrich Steinwedel
• 2021-09-27: Reserved by Friedrich Steinwedel for n=3300000-4000000
• 2021-09-27: Checked n = 3000000 - 3300000, Friedrich Steinwedel
• 2019-02-26: Found n = 2591874, Ricky L. Hubbard
• 2018-06-07: Found n = 2412735, Ricky L. Hubbard
• 2014-12-29: Reserved by NPLB Drive 15, for n=2000000-3000000
• 2013-02-02: Checked to n = 2000000, NPLB Mini Drive 3, released
• 2012-06-19: Found n = 1853115, Karsten Bonath
• 2011-11-09: Found n = 1537644, Chris Chatfield
• 2011-10-11: Found n = 1474766, Chris Chatfield
• 2010-11-19: Found n = 1209174, Karsten Bonath
• 2010-05-18: Reserved by NPLB Mini Drive 3, for 1000000<n<1300000
• 2009-09-11: Checked to n = 1000000, NPLB Mini Drive 1, released
• 2009-08-30: Found n = 982086, Karsten Bonath
• 2009-06-18: Found n = 893871, Karsten Bonath
• 2009-05-16: Found n = 832611, Karsten Bonath
• 2009-05-14: Reserved by NPLB Mini Drive 1, for 600000<n<970000
• 2009-05-04: Found n = 783927, Karsten Bonath
• 2009-03-22: Found n = 717510, Karsten Bonath
• 2009-03-18: Found n = 710678, Karsten Bonath
• 2008-12-30: Reserved by NPLB Mini Drive 1, for 600000<n<950000
• 2008-11-10: Checked to n = 600000, NPLB Drive 3, released
• 2008-03-01: Reserved by NPLB Drive 3, for 260000<n<600000
• 2007-12-23: Found n = 491436, Peter Benson
• 2003-06-03: Found n = 127539, Steven Harvey
• 2003-06-03: Found n = 125174, Steven Harvey
• 2001-02-21: Found n = 61194, Steven Harvey
• 1998-11-10: Found n = 142307, Yves Gallot