Riesel primes of the form 19413•2n-1

Current data

k , b : 19413 , 2 Type : 3 Count : 21 Nash : 1443 Max n : 725,000 Date : 2023-04-09

3, 7, 27, 75, 87, 127, 186, 315, 415, 487, 1590, 2175, 3162, 5766, 49482, 53883, 101787, 176623, 222075, 362667, 724320

History

• 2023-04-09: Checked to n = 725000, Alexander Jones, released
• 2023-03-23: Checked to n = 600000, Alexander Jones
• 2022-03-20: Checked to n = 500000, Alexander Jones
• 2022-02-27: Reserved by Alexander Jones
• 2021-12-30: Checked to n = 150000, Alexander Jones
• 2021-11-10: Checked to n = 100000, Alexander Jones
• 2020-08-29: Checked to n = 50000, Alexander Jones
• 2011-11-23: Checked to n = 1007, Gary Barnes
• 2009-01-13: Found n = 724320, Max Dettweiler, found as 19413•16¹⁸¹⁰⁸⁰-1 for CRUS