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Generalized Cullen primes of the form `n`•15ⁿ+1

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Revision as of 08:20, 15 May 2023 by Karbon (talk | contribs) (hist.)

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Current data

ASCII format :	n*15^n+1
Base :	15
Count :	10
Max `n` :	1,500,000
Date :	2023-04-29

8, 14, 44, 154, 274, 694, 17426, 59430^[1], 451554, 551878

Notes

↑ Proth 3962•15⁵⁹⁴³¹+1

History

2023-04-29: Checked to n = 1500000, Ryan Propper, released
2023-04-29: Found n = 551878, Ryan Propper
2023-04-29: Found n = 451554, Ryan Propper
2023-04-28: Reserved by Ryan Propper upto n=1500000
2023-04-27: Checked n = 100001 - 200000, Mark Rodenkirch, released
2023-04-17: Checked to n = 100000, Mark Rodenkirch, double-checked
2023-04-01: Reserved by Mark Rodenkirch
?: Checked to n = 136149, (?)
2001-10-05: Found n = 59430, Günter Löh
2000-07-05: Found n = 17426, Günter Löh

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Cullen prime