Williams primes of the form 16•15n-1

Current data

Base : 15 Count : 12 Max n : 200,000 Date : 2024-10-12

1, 9, 15, 57, 79, 221, 1105, 2265, 6471, 86925, 89071, 89605

History

• 2024-10-12: Checked n = 100000 - 200000, Richard Kapek, released
• 2024-09-25: Reserved by Richard Kapek for n = 100000 - 200000
• 2024-08-30: Checked n = 2 - 100000, Mark Rodenkirch, double-check n = 2 - 25000, released
• 2024-08-22: Reserved by Mark Rodenkirch for n = 2 - 100000
• 2018-03-27: Checked n = 1 - 25000, Eric Chen
• 2016: Checked n = 1 - 1000, Mauro Fiorentini