Williams primes of the form 28•27n-1

Current data

Base : 27 Count : 13 Max n : 100,000 Date : 2024-09-23

2, 4, 6, 8, 46, 56, 79, 571, 1904, 2690, 3559, 4920, 11195

Remarks :

Do not add primes here. Only add primes 3*n to Riesel 28•3n-1. For additional history, see above reused Riesel sequence.

History

• 2024-09-23: 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