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Generalized Woodall primes of the form `n`•19ⁿ-1

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Reserved! This sequence is currently reserved by: Ryan Propper

Current data

Base :	19
Count :	7
Max `n` :	1,600,000
Date :	2023-04-21
Reserved :	Ryan PropperRyan Propper/Reserved

12, 410, 33890, 91850, 146478, 189620^[1], 280524

Notes

↑ Riesel 9980•19¹⁸⁹⁶²¹-1

History

2023-04-21: Checked to n = 1600000, Ryan Propper
2023-04-10: Checked to n = 1000000, Ryan Propper
2023-04-01: Reserved by Ryan Propper
2015-08: Found n = 280524, Steven Harvey
2014-03-13: Checked to n = 25000, Steven Harvey
2010-11-01: Checked to n = 4000, Steven Harvey
2008-11-06: Found n = 189620, Hugo Platzer
2008-10-25: Found n = 146478, Hugo Platzer
2008-10-16: Found n = 91850, Hugo Platzer
2004-01-20: Found n = 33890, Steven Harvey

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