Generalized Cullen primes of the form n•22n+1

Reserved! This sequence is currently reserved by: Riley Fisher

Current data

ASCII format : n*22^n+1 Base : 22 Count : 6 Max n : 200,000 Date : 2024-10-25 Reserved : Riley FisherRiley Fisher/Reserved

1, 15, 189, 814, 19909, 72207

History

• 2024-10-25: Checked n = 1 - 100000, Gary Barnes, double-check, released
• 2024-08-24: Reserved by Riley Fisher for n = 200000 - 400000
• 2023-04-27: Checked n = 100000 - 200000, Mark Rodenkirch, double-check n = 100000 - 137649, released
• 2023-04-17: Checked n = 2 - 100000, Mark Rodenkirch, double-check
• 2023-04-01: Reserved by Mark Rodenkirch to n = 200000
• 2011: Checked n = 5093 - 137649, Günter Löh
• 2005-12-23: Found n = 72207, Günter Löh
• 2000-05-20: Found n = 19909, Günter Löh
• 2000: Checked n = 1 - 5093, Wilfrid Keller
• 2000-02: Found n = 814, Wilfrid Keller