Riesel primes of the form 4211•2n-1

Current data

k , b : 4211 , 2 Type : Low Count : 9 Nash : 378 Max n : 1,000,000 Date : 2024-04-02

2, 26, 38, 86, 158, 290, 8138, 25538, 42842

History

• 2024-04-02: Checked n = 1 - 1000000, Gary Barnes, double-check n = 1 - 20000 & n = 500000 - 1000000
• 2024-04-01: Reserved by Gary Barnes, to n = 1000000, partial double-check
• 2011-02-07: Checked n = 1 - 20000, Oscar Tutusaus Santandreu
• 2010-05-13: Checked n = 500000 - 1000000, James P. Burt, released
• 2007-07-06: Checked n = 1 - 10000, Gary Barnes