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Difference between revisions of "Cullen prime 2"

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Revision as of 15:16, 19 September 2019

Reserved! This sequence is currently reserved by: PrimeGrid

Current data

ASCII format :	n*2^n+1
Base :	2
Count :	16
Max `n` :	17,000,000
Date :	2019-04-28
Reserved :	PrimeGridPrimeGrid/Reserved

1, 141, 4713, 5795, 6611, 18496^[1], 32292^[2], 32469, 59656^[3], 90825, 262419, 361275, 481899, 1354828^[4], 6328548^[5], 6679881

Remarks :

The sequence A005849 in OEIS
Current status at PrimeGrid

Notes

↑ 289•2¹⁸⁵⁰²+1, Gen. Fermat
↑ 8073•2³²²⁹⁴+1
↑ 7457•2⁵⁹⁶⁵⁹+1
↑ 338707•2^1354830+1
↑ 1582137•2^6328550+1

History

2009-08-04: Found n = 6679881, Magnus Bergman, PrimeGrid
2009-04-20: Found n = 6328548, Dennis R. Gesker, PrimeGrid
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 Robinson
1905: Found n = 1, James Cullen

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