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 A052087 Primes whose decimal expansion is a concatenation of two or more consecutive increasing numbers (no leading zeros allowed). 15
 23, 67, 89, 1213, 3637, 4243, 4567, 5051, 5657, 6263, 6869, 7879, 8081, 9091, 9293, 9697, 102103, 108109, 120121, 126127, 138139, 150151, 156157, 180181, 186187, 188189, 192193, 200201, 216217, 242243, 246247, 252253, 270271 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Paul Tek, Table of n, a(n) for n = 1..10000 MATHEMATICA With[{e = 6}, TakeWhile[Select[Function[s, Union@ Flatten@ Map[Function[k, Map[FromDigits@ Flatten@ IntegerDigits@ # &, Partition[Take[s, 10^(e - k)], k, 1]]], Range[2, e]]]@ Range[10^e], PrimeQ], IntegerLength@ # <= e &]] (* Michael De Vlieger, Apr 23 2017 *) CROSSREFS Cf. A052088, A030458, A052089. Primes in A035333. Sequence in context: A125873 A059241 A241212 * A030458 A053559 A322414 Adjacent sequences:  A052084 A052085 A052086 * A052088 A052089 A052090 KEYWORD nonn,base AUTHOR Patrick De Geest, Jan 15 2000 EXTENSIONS Initial data corrected by Paul Tek, May 07 2013 STATUS approved

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Last modified April 22 14:41 EDT 2021. Contains 343177 sequences. (Running on oeis4.)