Riesel primes of the form 31393•2n-1

Current data

k , b : 31393 , 2 Count : 26 Nash : 1445 Max n : 600,000 Date : 2023-09-06

3, 19, 23, 27, 31, 63, 87, 151, 187, 371, 987, 1223, 1607, 1843, 2283, 2591, 3339, 4139, 6563, 12467, 32583, 126463, 142763, 165599, 214687, 599959

History

• 2023-09-06: Checked to n = 600000, Alexander Jones, released
• 2023-06-14: Checked to n = 350000, Alexander Jones
• 2023-03-22: Checked to n = 300000, Alexander Jones
• 2021-11-07: Checked to n = 100000, Alexander Jones
• 2021-11-07: Reserved by Alexander Jones
• 2020-08-27: Checked to n = 50000, Alexander Jones
• 2010-05-09: Found n = 599959, Peter Benson