Riesel primes of the form 39687•2n-1

Reserved! This sequence is currently part of Multi Reservation 5: CRUS Liskovets-Gallot.

Current data

k , b : 39687 , 2 Type : 3 Count : 24 Nash : 1826 Max n : 50,000 (5,000,000) Date : 2020-07-03 (2023-07-11) Reserved : Conjectures 'R UsConjectures 'R Us/Reserved

2, 14, 24, 26, 42, 44, 74, 84, 92, 102, 294, 402, 420, 714, 956, 1338, 5852, 6500, 7526, 10938, 16056, 21164, 38004, 49572

Remarks :

For odd-n, also see 79374*4^n-1.

History

• 2023-07-11: Checked to n = 10000000 (only odd n), (SRBase), Conjectures 'R Us
• 2023-05-01: Reserved by (SRBase), Conjectures 'R Us, for odd n=9000000-10000000
• 2022-11-05: Checked to n = 9000000 (only odd n), (SRBase), Conjectures 'R Us
• 2022-08-02: Reserved by (SRBase), Conjectures 'R Us, for odd n=8000000-9000000
• 2021-11-21: Checked to n = 8000000 (only odd n), (SRBase), Conjectures 'R Us
• 2021-06-20: Reserved by (SRBase), Conjectures 'R Us, for odd n=6650000-8000000
• 2021-01-28: Checked to n = 6650000 (only odd n), (PRPnet port 1400), Conjectures 'R Us, released
• 2020-07-03: Checked to n = 50000, Karsten Bonath
• 2017-05-16: Checked to n = 4906000 (only odd n), (PRPnet port 1400), Conjectures 'R Us
• 2015-04-29: Checked to n = 3000000 (only odd n), (PRPnet port 1400), Conjectures 'R Us
• 2014-09-20: Reserved by (PRPnet port 1400), Conjectures 'R Us, for odd n>2000000
• 2010-04-28: Checked to n = 2000000 (only odd n), Max Dettweiler, released
• 2010-03-24: Reserved by Max Dettweiler, for odd n=1250000-2000000
• 2009-02-13: Checked to n = 1250277 (only odd n), Jean Penné, released
• 2008-12-27: Checked to n = 1006557 (only odd n), Jean Penné
• 2008-12-02: Reserved by Jean Penné
• 2008-06-26: Checked to n = 800000 (only odd n), Gary Barnes, released
• 2008-06-17: Checked to n = 755000 (only odd n), Gary Barnes
• 2008-05-21: Checked to n = 700000 (only odd n), Gary Barnes
• 2008-05-18: Checked to n = 642000 (only odd n), Gary Barnes
• 2008-05-04: Reserved by Gary Barnes, for odd n≤600000
• 2008-03-17: Checked to n = 535677 (only odd n), Jean Penné, released
• 2008-03-12: Checked to n = 494637 (only odd n), Jean Penné
• 2008-02-29: Checked to n = 416853 (only odd n), Jean Penné
• 2008-02-24: Reserved by Jean Penné, for odd n≤524288
• 2008-02-19: Checked to n = 261837 (only odd n), Jean Penné, released
• 2008-01-19: Checked to n = 253075 (only odd n), Jean Penné