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Generalized Cullen primes of the form `n`•7ⁿ+1

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Current data

Base :	7
Count :	3
Max `n` :	255,681
Date :	2018-08-14

34, 1980, 9898^[1]

Remarks :

The sequence A242177 in OEIS

Notes

↑ Proth 202•7⁹⁹⁰⁰+1

History

1998-11-13: Found n = 9898, Wilfrid Keller
1989: Found n = 1980, Harvey Dubner

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Cullen prime