Riesel primes of the form 155877•2n-1

Current data

k , b : 155877 , 2  (sieve) Type : 3 Count : 24 Nash : 1647 Max n : 1,000,000 Date : 2024-04-18

4, 8, 26, 98, 116, 146, 148, 176, 220, 3032, 4234, 5756, 13370, 35968, 41572, 79160, 80098, 80842, 94858, 122314, 151088, 164096, 168050, 2273465

Remarks :

For additional odd n history, see CRUS Liskovets-Gallot search at Riesel 311754•4n-1. Sieve: p=500T, 30751 candidates 1000000<n<=2300000

History

• 2024-04-18: Checked to n = 1000000 (only even n), Gary Barnes, released
• 2024-04-15: Reserved by Gary Barnes
• 2023-10-16: Checked to n = 600000 (only even n), Alexander Jones
• 2023-09-05: Checked to n = 200000 (only even n), Alexander Jones
• 2023-03-21: Sieve file created: n = 150000-2300000 (only even n), Alexander Jones, yoyo@home
• 2022-12-27: Checked to n = 150000, Alexander Jones
• 2022-12-06: Checked to n = 100000, Alexander Jones
• 2022-04-05: Checked to n = 50000, Alexander Jones
• 2022-04-05: Reserved by Alexander Jones
• 2014-11-10: Found n = 2273465, Gary Barnes, CRUS Liskovets-Gallot
• 2011-08-10: Checked to n = 2000000 (only odd n), (PRPnet port 1300), Conjectures 'R Us, released