Riesel primes of the form 443•2n-1

Reserved! This sequence is currently part of Multi Reservation 8: NPLB Drive 17.

Current data

k , b : 443 , 2 Type : Low Count : 19 Nash : 787 Max n : 4,000,000 (2,820,000) Date : 2024-06-24 (2024-03-09) Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

6, 10, 34, 66, 70, 118, 186, 214, 298, 406, 438, 1474, 1510, 3426, 4866, 7594, 18154, 234114, 1143154

Remarks :

Also reserved by Michael Curtis. For additional n ≡ 0 mod 4 history, see Conjectures 'R Us search at Riesel 443•16n-1.

History

• 2024-06-24: Checked to n = 4000000, Michael Curtis
• 2022-08-10: Checked to n = 2000000, NPLB Drive 13, released
• 2022-08-09: Reserved by NPLB Drive 17, for 2000000<n<3000000
• 2020-03-13: Checked to n = 3490000, Michael Curtis
• 2017-06-19: Checked to n = 3310000, Michael Curtis
• 2015-06-29: Checked to n = 6000000, Dmitry Domanov, Conjectures 'R Us, only n ≡ 0 mod 4, released
• 2015-04-05: Checked to n = 2310000, Michael Curtis
• 2013-06-10: Checked to n = 2000000, Michael Curtis
• 2013-04-07: Checked to n = 2000000, Michael Curtis
• 2012-09-24: 1143154 confirmed, Lennart Vogel, NPLB Drive 13
• 2011-08-04: Reserved by NPLB Drive 13, for 1000000<n<2000000
• 2011-04-08: Checked to n = 1500000, Michael Curtis
• 2011-02-05: Checked to n = 1400000, Michael Curtis
• 2010-11-24: Found n = 1143154, Michael Curtis
• 2010-11-11: Checked to n = 1000000, NPLB Drive 5
• 2010-11-10: Checked to n = 1100000, Michael Curtis
• 2010-10-28: none, Michael Curtis
• 2009-10-24: Checked to n = 1045000, Michael Curtis
• 2008-12-22: Checked to n = 600000, NPLB Drive 1
• 2008-12-19: Reserved by NPLB Drive 5, for 600000<n<1000000
• 2008-12-12: Checked to n = 1040000, Michael Curtis
• 2008-05-08: Checked to n = 825000, Michael Curtis
• 2008-03-25: Checked to n = 333200, NPLB Drive 2
• 2008-03-21: Checked to n = 740000, Michael Curtis
• 2008-02-20: Checked to n = 550000, Michael Curtis
• 2008-01-22: Reserved by NPLB Drive 2, for 260000<=n<=333200
• 2008-01-21: Reserved by NPLB Drive 1, for 333201<=n<=600000
• 2008-01-05: Reserved by Michael Curtis, for n<=1200000
• 2007?: Checked to n = 260000,  ?
• 2002-03-26: Found n = 234114, Peter O'braian