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Williams primes of the form 20•21ⁿ-1

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Current data

Base :	21
Count :	13
Max n :	25,000
Date :	2018-03-17

1, 2, 7, 24, 31, 60, 230, 307, 750, 1131, 1665, 1827, 8673

History

2018-03-17: Checked to n = 25000, Eric Chen
?: Checked to n = 512, Steven Harvey

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Williams prime MM