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 A113928 (RSA-768)+10^n = prime where RSA-768 is the 232 decimal digit RSA challenge number. 0
 70, 129, 178, 263, 337, 545, 708, 714, 867, 1317, 1587, 1961, 19415 (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 number. LINKS Table of n, a(n) for n=1..13. EXAMPLE (RSA-768) + 10^70 is prime. MATHEMATICA Position[PrimeQ[Table[ \ 123018668453011775513049495838496272077285356959533479219732245215172640050726\ 365751874520219978646938995647494277406384592519255732630345373154826850791702\ 6122142913461670429214311602221240479274737794080665351419597459856902143413 \ + 10^n, {n, 1232}]], True] PROG (PARI) \\ Set N to RSA-768 for(n=1, 1e5, if(ispseudoprime(N+10^n), print1(n", "))) \\ Charles R Greathouse IV, Oct 03 2011 CROSSREFS Sequence in context: A024748 A024756 A254367 * A160354 A215111 A255801 Adjacent sequences: A113925 A113926 A113927 * A113929 A113930 A113931 KEYWORD nonn AUTHOR Joao Carlos Leandro da Silva (zxawyh66(AT)yahoo.com), Jan 30 2006 EXTENSIONS a(10)-a(12) from Charles R Greathouse IV, Oct 03 2011 a(13) from Charles R Greathouse IV, Oct 05 2011 No more terms below 30,000. STATUS approved

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Last modified May 30 03:43 EDT 2023. Contains 363044 sequences. (Running on oeis4.)