Riesel primes of the form 333•2n-1

Reserved! This sequence is currently part of Multi Reservation 7: NPLB K300 Drive 1.

Current data

k , b : 333 , 2 Type : 3 Count : 67 Nash : 2427 Max n : 2,800,000 Date : 2024-11-13 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

• 2022-05-17: Found n = 4846958, Friedrich Steinwedel
• 2022-03-22: Reserved by Friedrich Steinwedel for n>4000000
• 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