Riesel primes of the form 443•2n-1

Reserved! This sequence is currently reserved by: Michael Curtis

Current data

k , b : 443 , 2 Type : Low Count : 19 Nash : 787 Max n : 4,000,000 Date : 2024-09-26 Reserved : Michael CurtisMichael Curtis/Reserved

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

Remarks :

NPLB Drive 17 is double-checking n = 2000000 - 3000000. For additional n ≡ 0 mod 4 history, see Conjectures 'R Us search at Riesel 443•16n-1.

History

• 2024-09-26: Checked n = 6000000 - 8000000 only n ≡ 0 mod 4, (SRBase), Conjectures 'R Us, released
• 2024-06-24: Checked n = 3490000 - 4000000, Michael Curtis
• 2022-08-10: Checked n = 1000000 - 2000000, NPLB Drive 13, double-check, released
• 2022-08-09: Reserved by NPLB Drive 17, for n = 2000000 - 3000000 double-check
• 2020-03-13: Checked n = 3310000 - 3490000, Michael Curtis
• 2017-06-19: Checked n = 2310000 - 3310000, Michael Curtis
• 2015-04-05: Checked n = 2000000 - 2310000, Michael Curtis
• 2013-06-10: none, Michael Curtis
• 2013-04-07: Checked n = 1500000 - 2000000, Michael Curtis
• 2012-09-24: 1143154 confirmed, Lennart Vogel, NPLB Drive 13
• 2011-08-04: Reserved by NPLB Drive 13, for n = 1000000 - 2000000 double-check
• 2011-04-08: Checked n = 1400000 - 1500000, Michael Curtis
• 2011-02-05: Checked n = 1100000 - 1400000, Michael Curtis
• 2010-11-24: Found n = 1143154, Michael Curtis
• 2010-11-11: Checked n = 600000 - 1000000, NPLB Drive 5, double-check
• 2010-11-10: Checked n = 1045000 - 1100000, Michael Curtis
• 2010-10-28: none, Michael Curtis
• 2009-10-24: Checked n = 1040000 - 1045000, Michael Curtis
• 2008-12-22: Checked n = 333201 - 600000, NPLB Drive 1
• 2008-12-19: Reserved by NPLB Drive 5, for n = 600000 - 1000000 double-check
• 2008-12-12: Checked n = 825000 - 1040000, Michael Curtis
• 2008-05-08: Checked n = 740000 - 825000, Michael Curtis
• 2008-03-25: Checked n = 260000 - 333200, NPLB Drive 2
• 2008-03-21: Checked n = 550000 - 740000, Michael Curtis
• 2008-02-20: Checked n = 260000 - 550000, Michael Curtis
• 2008-01-22: Reserved by NPLB Drive 2, for n = 260000 - 333200
• 2008-01-21: Reserved by NPLB Drive 1, for n = 333201 - 600000
• 2008-01-05: Reserved by Michael Curtis, to n = 1200000
• 2007?: Checked to n = 260000,  ?
• 2002-03-26: Found n = 234114, Peter O'braian