Williams primes of the form 27•28n-1

Reserved! This sequence is currently reserved by: Richard Kapek

Current data

Base : 28 Count : 5 Max n : 100,000 Date : 2024-10-19 Reserved : Richard KapekRichard Kapek/Reserved

20, 1091, 5747, 6770, 25598

History

• 2024-10-19: Reserved by Richard Kapek for n = 100000 - 200000
• 2024-09-25: Checked n = 2 - 100000, Mark Rodenkirch, double-check n = 2 - 25000, released
• 2024-08-19: Reserved by Mark Rodenkirch for n = 2 - 100000
• 2018-03-14: Checked n = 1 - 25000, Eric Chen
• ?: Checked to n = 512, Steven Harvey