Riesel primes of the form 27297•2n-1

Current data

k , b : 27297 , 2 Type : 3 Count : 32 Nash : 1861 Max n : 400,000 Date : 2025-03-21

6, 12, 20, 69, 180, 236, 549, 1064, 1305, 1350, 1710, 1920, 2460, 2933, 5064, 7752, 13028, 17936, 22749, 23352, 23544, 30149, 32910, 56264, 61224, 86957, 90033, 124134, 131960, 231990, 319068, 357213

History

• 2025-03-21: Checked n = 200000 - 400000, Alexander Jones, released
• 2024-10-17: Sieve file created: n = 200000-400000, Alexander Jones
• 2024-10-17: Checked n = 50000 - 200000, Alexander Jones, results included
• 2024-10-12: Reserved by Alexander Jones for n = 50000 - 400000
• 2020-08-30: Checked n = 1 - 50000, Alexander Jones
• 2011-11-23: Checked n = 1 - 1007, Gary Barnes
• 2008-07-02: Found n = 357213, Chris Chatfield
• 1989: Found n = 7752, Sergio Zarantonello, Joel Smith, Gene Smith, Bodo Parady, Landon Curt Noll, John Brown