The On-Line Encyclopedia of Integer Sequences (OEIS)

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A105005

Primes from merging of 9 successive digits in decimal expansion of exp(2).
(history; published version)

#7 by N. J. A. Sloane at Sat Apr 27 09:11:25 EDT 2013

LINKS

The first <a href="http://www.worldwideschool.org/library/books/sci/math/MiscellaneousMathematicalConstants/chap21.html">5,000 digits of exp(2)</a> as calculated by _Simon Plouffe _ at WorldWideSchool.org.

Discussion

Sat Apr 27

09:11

OEIS Server: https://oeis.org/edit/global/1886

#6 by N. J. A. Sloane at Fri Apr 26 22:47:38 EDT 2013

STATUS

proposed

approved

#5 by Vincenzo Librandi at Fri Apr 26 15:10:10 EDT 2013

STATUS

editing

proposed

#4 by Vincenzo Librandi at Fri Apr 26 15:10:04 EDT 2013

LINKS

Vincenzo Librandi, <a href="/A105005/b105005.txt">Table of n, a(n) for n = 1..1000</a>

#3 by Vincenzo Librandi at Fri Apr 26 15:09:22 EDT 2013

OFFSET

0,1,1

LINKS

Vincenzo Librandi, <a href="/A105005/b105005.txt">Table of n, a(n) for n = 1..1000</a>

MATHEMATICA

Select[FromDigits/@Partition[RealDigits[Exp[2], 10, 900][[1]], 9, 1], #>99999999&&PrimeQ[#]&] (* Vincenzo Librandi, Apr 26 2013 *)

EXTENSIONS

Changed offset from 0 to 1 by Vincenzo Librandi, Apr 26 2013

STATUS

approved

editing

#2 by N. J. A. Sloane at Fri Feb 27 03:00:00 EST 2009

LINKS

The first <A HREFa href="http://www.worldwideschool.org/library/books/sci/math/MiscellaneousMathematicalConstants/chap21.html">5,000 digits of exp(2)</Aa> as calculated by Simon Plouffe at WorldWideSchool.org.

Eric Weisstein, <A HREFa href="http://mathworld.wolfram.com/ExponentialFunction.html">Exponential Functions </Aa>

KEYWORD

nonn,base,new

#1 by N. J. A. Sloane at Sat Apr 09 03:00:00 EDT 2005

NAME

Primes from merging of 9 successive digits in decimal expansion of exp(2).

DATA

315570551, 782252257, 773753161, 123884603, 447839221, 213398077, 122895607, 581820269, 552348757, 146799281, 751532081, 913558771, 258833999, 987122813, 263792951, 295182227, 784294843, 135287693, 876938669, 938669857, 996014807

OFFSET

0,1

LINKS

The first <A HREF="http://www.worldwideschool.org/library/books/sci/math/MiscellaneousMathematicalConstants/chap21.html">5,000 digits of exp(2)</A> as calculated by Simon Plouffe at WorldWideSchool.org.

Eric Weisstein, <A HREF="http://mathworld.wolfram.com/ExponentialFunction.html">Exponential Functions </A>

KEYWORD

nonn,base,new

AUTHOR

Andrew G. West (WestA(AT)wlu.edu), Mar 31 2005

STATUS

approved