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Generalized Woodall primes of the form `n`•20ⁿ-1

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Revision as of 08:28, 30 April 2023 by Karbon (talk | contribs) (n=1.6M)

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Reserved! This sequence is currently reserved by: Ryan Propper

Current data

Base :	20
Count :	15
Max `n` :	1,600,000
Date :	2023-04-29
Reserved :	Ryan PropperRyan Propper/Reserved

1, 18, 44, 60^[1], 80^[2], 123, 429, 1166, 2065, 8774, 35340^[3], 42968, 50312, 210129, 663703

Notes

History

2023-04-29: Checked to n = 1600000, Ryan Propper
2023-04-19: Reserved by Ryan Propper for 1000000≤n≤1600000
2023-04-10: Checked to n = 1000000, Ryan Propper
2023-04-09: Found n = 663703, Ryan Propper
2023-04-01: Reserved by Ryan Propper for n≤1000000
2016-12: Found n = 210129, Steven Harvey
2014-03-13: Checked to n = 25000, Steven Harvey
2010-11-01: Checked to n = 4000, Steven Harvey
2002-03-11: Found n = 50312, Dirk Augustin
2001-12-28: Found n = 42968, Dirk Augustin
2001-11-28: Found n = 35340, Dirk Augustin
2000-02-25: Found n = 8774, Dirk Augustin
2000-02-04: Found n = 2065, Joe DeMaio

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