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Williams primes of the form 31•30ⁿ-1

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Current data

Base :	30
Count :	14
Max n :	25,000
Date :	2018-03-17

1, 5, 11, 15, 21, 22, 129, 153, 217, 411, 855, 2820, 2900, 8707

History

2018-03-17: Checked to n = 25000, Eric Chen
2016: Checked to n = 1000, Mauro Fiorentini

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Williams prime PM