Information as of 2020-04-07: Inserting more history entries for Riesel primes k<300 (k=1-49 done)

Williams primes of the form 55•54n-1

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Current data

Base : 54
Count : 10
Max n : 10,000
Date : 2019-04-23
1, 5, 7, 23, 28, 42, 264, 359, 721, 1655

History