Riesel primes of the form 333•2n-1

Current data

k , b : 333 , 2 Type : 3 Count : 67 Nash : 2427 Max n : 5,000,000 Date : 2024-04-02

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

Remarks :

NPLB Drive 19 is double-checking n=3000000-4000000.

History

• 2024-04-02: Reservation dropped, Friedrich Steinwedel
• 2023-03-07: Reserved by NPLB Drive 19, for 3000000<n<4000000 double-check
• 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