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 A113932 (RSA-2048)-10^n = prime where RSA-2048 is the 617 decimal digit unfactored RSA challenge number. 0
 107, 848, 871, 966, 1110 (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-2048)- 10^107 = prime MATHEMATICA Position[PrimeQ[Table[ \ 251959084756578934940271832400483985714292821262040320277771378360436620207075\ 955562640185258807844069182906412495150821892985591491761845028084891200728449\ 926873928072877767359714183472702618963750149718246911650776133798590957000973\ 304597488084284017974291006424586918171951187461215151726546322822168699875491\ 824224336372590851418654620435767984233871847744479207399342365848238242811981\ 638150106748104516603773060562016196762561338441436038339044149526344321901146\ 575444541784240209246165157233507787077498171257724679629263863563732899121548\ 31438167899885040445364023527381951378636564391212010397122822120720357 - \ 10^n, {n, 1617}]], True] PROG (PARI) \\ Set N to RSA-2048 for(n=1, 617, if(ispseudoprime(N-10^n), print1(n", "))) CROSSREFS Sequence in context: A183057 A059258 A212377 * A250154 A250155 A240596 Adjacent sequences:  A113929 A113930 A113931 * A113933 A113934 A113935 KEYWORD nonn,base,fini,full AUTHOR Joao da Silva (zxawyh66(AT)yahoo.com), Jan 30 2006 STATUS approved

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Last modified May 18 01:26 EDT 2021. Contains 343992 sequences. (Running on oeis4.)