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#7 by Joerg Arndt at Fri Mar 13 05:01:06 EDT 2015
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#6 by Michel Marcus at Fri Mar 13 00:57:10 EDT 2015
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#5 by Jon E. Schoenfield at Thu Mar 12 22:56:06 EDT 2015
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#4 by Jon E. Schoenfield at Thu Mar 12 22:55:59 EDT 2015
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| COMMENTS
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No more terms below the (10^7)-th prime, i.e., 179424673. - Robert G. Wilson v, Jan 21 2005
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| EXTENSIONS
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No more terms below the 10^7-th prime or 179424673. - Robert G. Wilson v Jan 21 2005.
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| STATUS
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approved
editing
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#3 by N. J. A. Sloane at Tue Feb 11 19:05:42 EST 2014
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| AUTHOR
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_Joseph L. Pe (joseph_l_pe(AT)hotmail.com), _, Jan 18 2005
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Discussion
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| Tue Feb 11
| 19:05
| OEIS Server: https://oeis.org/edit/global/2119
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#2 by N. J. A. Sloane at Fri Feb 24 03:00:00 EST 2006
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| MATHEMATICA
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Select[ Prime[ Range[ 10^7]], Transpose[ FactorInteger[ Prime[ # ] + 1]][[1, -, -1]] == # &]
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| KEYWORD
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nonn,new
nonn
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#1 by N. J. A. Sloane at Sun Feb 20 03:00:00 EST 2005
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| NAME
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Numbers n such that n is the largest prime factor of 1 + prime(n).
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| DATA
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2, 3, 40087, 251737
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| OFFSET
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1,1
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| EXAMPLE
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3 = the largest factor of 1 + prime(3) = 6, so 3 belongs to the sequence.
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| MATHEMATICA
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Select[ Prime[ Range[ 10^7]], Transpose[ FactorInteger[ Prime[ # ] + 1]][[1, -1]] == # &]
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| KEYWORD
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nonn
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| AUTHOR
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Joseph L. Pe (joseph_l_pe(AT)hotmail.com), Jan 18 2005
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| EXTENSIONS
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No more terms below the 10^7-th prime or 179424673. - Robert G. Wilson v Jan 21 2005.
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| STATUS
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approved
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