Williams primes of the form 26•25n-1

Reserved! This sequence is currently reserved by: Richard Kapek

Current data

Base : 25 Count : 13 Max n : 100,000 Date : 2024-10-19 Reserved : Richard KapekRichard Kapek/Reserved

2, 17, 18, 118, 220, 290, 988, 1544, 3065, 3695, 20828, 68207, 76808

Remarks :

Do not add primes here. Only add primes 2*n to Riesel 26•5n-1. For additional history, see above reused Riesel sequence.

History

• 2024-10-19: Reserved by Richard Kapek for n = 100000 - 200000
• 2024-09-14: Checked n = 2 - 100000, Mark Rodenkirch, double-check n = 2 - 25000, released
• 2024-08-19: Reserved by Mark Rodenkirch for n = 2 - 100000
• 2018-03-17: Checked n = 1 - 25000, Eric Chen
• 2016: Checked n = 1 - 1000, Mauro Fiorentini