Riesel primes of the form 281263•2n-1

Current data

k , b : 281263 , 2 Type : Low Count : 16 Nash : 673 Max n : 500,000 Date : 2022-02-16

7, 47, 71, 159, 191, 463, 479, 783, 1423, 2359, 6095, 90975, 258215, 289015, 338383, 378615

History

• 2022-02-16: Checked to n = 500000, Alexander Jones, double-check for n < 378615, released
• 2022-02-13: Checked to n = 300000, Alexander Jones, double-check
• 2022-02-10: Checked to n = 150000, Alexander Jones, double-check
• 2022-02-10: Reserved by Alexander Jones to n=500000
• 2005-04-07: Found n = 378615, Peter Benson
• 2005-03-16: Found n = 338383, Peter Benson
• 2005-02-25: Found n = 289015, Peter Benson
• 2005-02-18: Found n = 258215, Peter Benson