Williams primes of the form 16•17n+1

Current data

Base : 17 Count : 9 Max n : 200,000 Date : 2024-10-24

4, 20, 320, 736, 2388, 3344, 8140, 26908, 111440

Remarks :

For all even n-values 16•17n+1 is a Generalized Fermat number.

History

• 2024-10-24: Checked n = 100000 - 200000, Richard Kapek, released
• 2024-10-12: Reserved by Richard Kapek for n = 100000 - 200000
• 2024-09-02: Checked n = 2 - 100000, Mark Rodenkirch, double-check, released
• 2024-08-22: Reserved by Mark Rodenkirch for n = 2 - 100000 double-check
• 2020-10-04: Checked n = 25000 - 100000, Paul Vanderveen
• 2018-03-09: Checked n = 1 - 25000, Eric Chen
• 2016: Checked n = 1 - 1000, Mauro Fiorentini
• 2002-06-19: Found n = 26908, Kazuyoshi Asao