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Generalized Cullen primes of the form `n`•18ⁿ+1

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Revision as of 20:55, 17 April 2023 by Rogue (talk | contribs) (Added history)

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Current data

ASCII format :	n*18^n+1
Base :	18
Count :	12
Max `n` :	203,597
Date :	2019-11-23

1, 3, 21, 23, 842, 1683, 3401, 16839, 49963, 60239, 150940, 155928

History

?: Checked to n = 203597, (?)
2002-05-20: Found n = 60239, Günter Löh
2000-11-02: Found n = 49963, Günter Löh
2000-05-15: Found n = 16839, Günter Löh
1990-01-01: Found n = 1683, Harvey Dubner
1990-01-01: Found n = 842, Harvey Dubner

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Cullen prime