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 A113934 (RSA-704) + 10^n = prime where RSA-704 is the 212 decimal digit unfactored RSA challenge number. 0
 206, 356, 1274, 1528, 1568, 2402 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS This sequence shows that the difference between a composite number and a prime rests on the modification of a single decimal digit of the given composite integer. LINKS EXAMPLE (RSA-704)+ 10^206 is prime. MATHEMATICA Position[PrimeQ[Table[ \ 740375634795617128280467960974295731425931888892312890849362326389727650340282\ 662768919964196251178439958943305021275853701189680982867331732731089309005525\ 05116877063299072396380786710086096962537934650563796359 + 10^n, {n, 2000}]], \ True] PROG (PARI) \\ Set N to RSA-704 for(n=1, 1e4, if(ispseudoprime(N+10^n), print1(n", "))) \\ Charles R Greathouse IV, Oct 05 2011 CROSSREFS Sequence in context: A025343 A222619 A252270 * A260101 A113490 A054007 Adjacent sequences:  A113931 A113932 A113933 * A113935 A113936 A113937 KEYWORD nonn AUTHOR Joao da Silva (zxawyh66(AT)yahoo.com), Jan 30 2006 EXTENSIONS a(6) from Charles R Greathouse IV, Oct 05 2011 STATUS approved

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Last modified June 21 16:39 EDT 2021. Contains 345365 sequences. (Running on oeis4.)