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Williams primes of the form 30•31n+1
Current data
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History
- 2018-03-17: Checked to n = 25000, Eric Chen
- 2016: Checked to n = 1000, Mauro Fiorentini
- 1994-10-01: Found n = 3424, Chris Caldwell
- 1994: Found n = 1514, Chris Caldwell