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Generalized Cullen primes of the form `n`•3ⁿ+1

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Revision as of 18:55, 19 July 2023 by Rogue (talk | contribs) (Reserved)

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Reserved! This sequence is currently reserved by: Mark Rodenkirch

Current data

ASCII format :	n*3^n+1
Base :	3
Count :	14
Max `n` :	1,200,000
Date :	2023-07-03
Reserved :	Mark RodenkirchMark Rodenkirch/Reserved

2, 8, 32, 54^[1], 114^[2], 414^[3], 1400, 1850, 2848, 4874, 7268, 19290^[4], 337590^[5], 1183414

Remarks :

The sequence A006552 in OEIS

Notes

History

2023-07-03: Reserved by Mark Rodenkirch to n=3000000
2014: Checked n = 166800 - 1200000, Predrag Minovic
2014-01-20: Found n = 1183414, Predrag Minovic
2006-06-02: Found n = 337590, Predrag Minovic
2000-01-26: Found n = 7268, Chun Wa Lau
1998-11-12: Found n = 19290, Wilfrid Keller
1989: Found n = 4874, Harvey Dubner
1989: Found n = 2848, Harvey Dubner

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