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Riesel primes of the form 253•2ⁿ-1

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Revision as of 08:16, 16 August 2024 by Karbon (talk | contribs) (range)

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Current data

`k` , `b` :	253 , 2
Type :	Low
Count :	5
Nash :	185
Max `n` :	6,200,000
Date :	2024-08-16

71, 1007, 27623, 1722623, 1965215

History

2024-08-16: Reservation dropped, Dmitry Domanov
2021-11-10: Checked n = 6000000 - 6200000, Dmitry Domanov
2020-03-11: Checked n = 5000000 - 6000000, Dmitry Domanov
2015-05-06: Checked n = 4000000 - 5000000, Dmitry Domanov
2013-09-30: Checked n = 3990000 - 4000000, Dmitry Domanov
2013-09-03: Checked n = 3000000 - 3990000, Dmitry Domanov
2012-12-30: Found n = 1965215, Dmitry Domanov, double-check
2012-09-19: Checked n = 1750000 - 3000000, Dmitry Domanov
2010-03-14: Reserved by Dmitry Domanov from n = 1750000
2007-07-23: Checked n = 1225000 - 1750000, Predrag Minovic
2007-04-20: Found n = 1722623, Predrag Minovic
2007-01-21: Checked n = 1165000 - 1225000, Predrag Minovic
2006-2007?: Checked n = 1 - 1166000, Jocelyn Larouche
1998-11-26: Found n = 27623, Wilfrid Keller

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