Williams primes of the form 28•27n+1

Current data

Base : 27 Count : 8 Max n : 100,000 Date : 2024-09-23

1, 5, 6, 165, 825, 27798, 39672, 55730

Remarks :

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