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 A069151 Concatenations of consecutive primes, starting with 2, that are also prime. 10
 2, 23, 2357 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Primes in A019518. The next term is the 355-digit number 2357111317192329313741434753...677683691701709719 which is too large to include here. See A046035, A046284. REFERENCES R. Crandall and C. Pomerance, Prime Numbers: A Computational Perspective, 2nd ed., Springer, NY, 2005; see p. 78. [The 2002 printing states incorrectly that 2357...5441 is prime.] LINKS Jens Kruse Andersen, Table of n, a(n) for n = 1..5 M. Fleuren, Smarandache Concatenated Primes Eric Weisstein's World of Mathematics, Smarandache-Wellin Number Eric Weisstein's World of Mathematics, Smarandache-Wellin Prime Wikipedia, Smarandache-Wellin number MATHEMATICA Cases[FromDigits /@ Rest[FoldList[Join, {}, IntegerDigits[Prime[ Range[10^3]]]]], _?PrimeQ] (* Eric W. Weisstein, Oct 30 2015 *) PROG (PARI) s=""; for(n=1, 200, s=concat(s, prime(n)); if(ispseudoprime( eval(s)), print1(s", "))) \\ Jens Kruse Andersen, Jun 26 2014 CROSSREFS Cf. A019518. Cf. A046035 (Numbers n such that the concatenation of the first n primes is prime) Cf. A046284 (Primes p such that concatenation of primes from 2 through p is a prime). Cf. A030997 (Smallest prime which is a concatenation of n consecutive primes). Sequence in context: A067823 A114794 A090509 * A227529 A091763 A124513 Adjacent sequences:  A069148 A069149 A069150 * A069152 A069153 A069154 KEYWORD nonn,bref,base AUTHOR Joseph L. Pe, Apr 08 2002 EXTENSIONS Edited by Robert G. Wilson v, Apr 11 2002 Entry revised Jan 18 2004 STATUS approved

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Last modified February 28 04:39 EST 2020. Contains 332321 sequences. (Running on oeis4.)