Riesel primes of the form 20049•2n-1

Current data

k , b : 20049 , 2  (sieve) Type : 3 Count : 24 Nash : 1663 Max n : 1,000,000 Date : 2024-06-20

11, 41, 47, 1199, 1205, 1469, 4585, 5389, 15025, 18829, 19019, 27119, 31705, 45079, 79391, 97871, 99961, 139649, 219397, 334571, 561467, 633539, 899509, 1687252

Remarks :

For additional even n history, see CRUS Liskovets-Gallot search at Riesel 20049•4n-1. Sieve: p=500T, 18317 candidates 1000000<n<=1700000

History

• 2024-06-20: Checked to n = 1000000 (only odd n), Alexander Jones, results included for n < 1000000, released
• 2023-09-25: Checked to n = 600000 (only odd n), Alexander Jones
• 2023-09-05: Checked to n = 200000 (only odd n), Alexander Jones
• 2023-04-27: Reserved by Alexander Jones
• 2023-03-21: Sieve file created: n = 150000-1700000 (only odd n), Alexander Jones, yoyo@home
• 2022-12-27: Checked to n = 150000, Alexander Jones
• 2011-06-02: Found n = 1687252, Ian M. Gunn, CRUS Liskovets-Gallot
• 2011-05-13: Checked to n = 1400000 (only even n), (PRPnet port 1300), Conjectures 'R Us
• 2008-01-19: Checked to n = 132000, Karsten Bonath