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Generalized Cullen primes of the form `n`•9ⁿ+1

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Current data

ASCII format :	n*9^n+1
Base :	9
Count :	5
Max `n` :	500,000
Date :	2023-05-28

2^[1], 12382^[2], 27608^[3], 31330^[4], 117852^[5]

Notes

History

2023-05-28: Checked to n = 500000, Mark Rodenkirch
2023-04-28: Reserved by Mark Rodenkirch to n=500000
2023-04-23: Checked n = 2 - 100000, Mark Rodenkirch, double-checked
?: Checked to n = 222431, (?)
2002-01-28: Found n = 117852, Günter Löh
2000-02-03: Found n = 31330, Günter Löh
2000-01-31: Found n = 27608, Günter Löh
2000-01-26: Found n = 12382, Günter Löh

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Cullen prime