Riesel primes of the form 103947•2n-1

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

Current data

k , b : 103947 , 2 Type : 3 Count : 8 Nash : 1135 Max n : 50,000 (5,000,000) Date : 2020-07-03 (2023-07-11) Reserved : Conjectures 'R UsConjectures 'R Us/Reserved

2, 14, 50, 392, 1820, 3884, 9104, 13920

Remarks :

For odd-n, also see 207894*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
• 2011-08-10: Checked to n = 2000000 (only odd n), (PRPnet port 1300), Conjectures 'R Us, released
• 2011-05-13: Checked to n = 1400000 (only odd n), (PRPnet port 1300), Conjectures 'R Us
• 2011-02-07: Reserved by (PRPnet port 1300), Conjectures 'R Us
• 2011-02-02: Checked to n = 1100000 (only odd n), Karsten Bonath, released
• 2010-06-29: Checked to n = 1100000 (only odd n), Karsten Bonath
• 2010-05-08: Checked to n = 1070000 (only odd n), Karsten Bonath
• 2010-03-28: Checked to n = 979000 (only odd n), Karsten Bonath
• 2009-04-10: Checked to n = 968000 (only odd n), Karsten Bonath
• 2008-12-11: Checked to n = 665000 (only odd n), Karsten Bonath
• 2008-06-15: Checked to n = 409000 (only odd n), Karsten Bonath
• 2008-05-04: Checked to n = 385000 (only odd n), Karsten Bonath
• 2008-02-01: Checked to n = 261941 (only odd n), Jean Penné, released
• 2008-01-19: Checked to n = 47787 (only odd n), Jean Penné