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 A028864 Primes with digits in nondecreasing order. 13
 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 37, 47, 59, 67, 79, 89, 113, 127, 137, 139, 149, 157, 167, 179, 199, 223, 227, 229, 233, 239, 257, 269, 277, 337, 347, 349, 359, 367, 379, 389, 449, 457, 467, 479, 499, 557, 569, 577, 599, 677, 1117, 1123, 1129 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Identical digits are acceptable, e.g., 1117 is in the sequence. - Harvey P. Dale, Aug 16 2011 LINKS T. D. Noe and Alois P. Heinz, Table of n, a(n) for n = 1..10000 (terms n = 1..1000 from T. D. Noe) FORMULA Trivially, a(n) >> exp(n^(1/10)). - Charles R Greathouse IV, Mar 15 2014 prime(n) = A028905(n) if prime(n) is in this sequence. - Alonso del Arte, Nov 25 2019 MATHEMATICA daoQ[n_] := Count[Differences[IntegerDigits[n]], _?(# < 0 &)] == 0; Select[Prime[Range[200]], daoQ] (* Harvey P. Dale, Aug 16 2011 *) PROG (R) j=2; y=as.bigz(c()); while(j<1000) { x=sort(as.numeric(strsplit(as.character(j), spl="")[[1]]), decr=F) if(j==paste(x[x>0], collapse="")) y=c(y, j) j=nextprime(j) } //  Christian N. K. Anderson, Apr 04 2013 (PARI) select(n->n=digits(n); n==vecsort(n), primes(500)) \\ Charles R Greathouse IV, Mar 15 2014 (MAGMA) [p:p in PrimesUpTo(1200)| Reverse(Intseq(p)) eq Sort(Intseq(p))]; // Marius A. Burtea, Nov 29 2019 CROSSREFS Cf. A009994, A052015, A028867, A052014, A028905. Sequence in context: A335331 A279956 A197300 * A342063 A067903 A341934 Adjacent sequences:  A028861 A028862 A028863 * A028865 A028866 A028867 KEYWORD nonn,base,nice AUTHOR EXTENSIONS Definition corrected by Omar E. Pol, Mar 22 2012 STATUS approved

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Last modified May 12 10:54 EDT 2021. Contains 343821 sequences. (Running on oeis4.)