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 A030997 Smallest prime which is a concatenation of n consecutive primes. 8
 2, 23, 5711, 2357, 711131719, 113127131137139149, 29313741434753, 107109113127131137139149, 211223227229233239241251257, 691701709719727733739743751757, 2329313741434753596167 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Hans Havermann, Table of n, a(n) for n = 1..100 EXAMPLE a(5) = 711131719 is the smallest prime which is the concatenation of five consecutive primes 7, 11, 13, 17 and 19. PROG (PARI) for(k=1, 19, for(i=0, 1e9, isprime( eval( p=concat( vector( k, j, Str( prime( i+j )))))) & break); print1(p, ", ")) \\ M. F. Hasler, Nov 10 2009 CROSSREFS Cf. A030996, A068655, A030473, A086041, A099727, A167517. Cf. A030461 (primes that are concatenations of two primes), A030469 (three primes), A030473 (four primes), A086041 (five primes). Sequence in context: A087388 A117507 A068656 * A090511 A369993 A114256 Adjacent sequences: A030994 A030995 A030996 * A030998 A030999 A031000 KEYWORD nonn,base AUTHOR Patrick De Geest and Warut Roonguthai STATUS approved

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Last modified May 29 20:00 EDT 2024. Contains 372952 sequences. (Running on oeis4.)