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Riesel primes of the form 3991•2n-1
Current data
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History
- 2014-10-16: Checked n = 400000 - 540000, Karsten Bonath
- 2014-08-04: Checked n = 200000 - 400000, Karsten Bonath
- 2012-05-08: Checked n = 1 - 200000, Oscar Tutusaus Santandreu
- 2010-07-29: Found n = 589805, Ian M. Gunn
- 2009-01-13: Checked n = 10000 - 20000, Ian M. Gunn, double-check
- 2009-01-13: Checked n = 10000 - 20000, Karsten Bonath
- 2009-01-13: Reserved by Ian M. Gunn for n = 10000 - 1000000
- 2007-07-06: Checked n = 1 - 10000, Gary Barnes
