Cullen primes n•2n+1

Reserved! This sequence is currently reserved by: PrimeGrid Cullen Prime Search

Current data

ASCII format : n*2^n+1 Base : 2 Count : 16 Max n : 25,000,000 Date : 2024-10-25 Reserved : PrimeGrid Cullen Prime SearchPrimeGrid Cullen Prime Search/Reserved

1, 141, 4713, 5795, 6611, 18496, 32292, 32469, 59656, 90825, 262419, 361275, 481899, 1354828, 6328548, 6679881

Remarks :

The sequence A005849 in OEIS Current status at PrimeGrid

History

• 2024-10-25: Checked n = 1 - 100000, Gary Barnes, double-check, released
• 2021-09-11: Checked to n = 21000000, PrimeGrid Cullen Prime Search
• 2009-08-04: Found n = 6679881, Magnus Bergman, PrimeGrid Cullen Prime Search (Official announcement)
• 2009-04-20: Found n = 6328548, Dennis R. Gesker, PrimeGrid Cullen Prime Search (Official announcement)
• 2005-08-25: Found n = 1354828, Mark Rodenkirch
• 1998-09-30: Found n = 481899, Masakatu Morii
• 1998-07-31: Found n = 361275, Darren Smith
• 1998-03-08: Found n = 262419, Darren Smith
• 1997-05: Found n = 90825, Jeffrey Young
• 1997-05: Found n = 59656, Jeffrey Young
• 1997-05-01: Found n = 32469, Masakatu Morii
• 1997-05-01: Found n = 32292, Masakatu Morii
• 1984: Found n = 18496, Wilfrid Keller
• 1984: Found n = 6611, Wilfrid Keller
• 1984: Found n = 5795, Wilfrid Keller
• 1984: Found n = 4713, Wilfrid Keller
• 1957: Found n = 141, Raphael M. Robinson
• 1905: Found n = 1, James Cullen