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Williams primes of the form 26•27n-1

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Current data

Base : 27
Count : 16
Max n : 25,000
Date : 2018-03-17
1, 3, 5, 13, 15, 31, 55, 151, 259, 479, 734, 1775, 2078, 6159, 6393, 9013
Remarks :
Should be (re)used from Riesel 26•3n-1.

History