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A030997
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Smallest prime which is a concatenation of n consecutive primes.
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7
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2, 23, 5711, 2357, 711131719, 113127131137139149, 29313741434753, 107109113127131137139149, 211223227229233239241251257, 691701709719727733739743751757, 2329313741434753596167
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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LINKS
| Hans Havermann, Table of n, a(n) for n = 1..100
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EXAMPLE
| a(5) = 711131719 is the smallest prime which is the concatenation of five consecutive primes 7,11,13,17 and 19.
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PROG
| (PARI) for(k=1, 19, for(i=0, 1e9, isprime( eval( p=concat( vector( k, j, Str( prime( i+j )))))) & break); print1(p, ", ")) [From M. F. Hasler (www.univ-ag.fr/~mhasler), Nov 10 2009]
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CROSSREFS
| Cf. A030996, A068655.
Cf. A030473, A086041, A099727, A167517. [From M. F. Hasler (www.univ-ag.fr/~mhasler), Nov 10 2009]
Sequence in context: A087388 A117507 A068656 * A090511 A114256 A110714
Adjacent sequences: A030994 A030995 A030996 * A030998 A030999 A031000
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KEYWORD
| nonn,base
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AUTHOR
| Patrick De Geest (pdg(AT)worldofnumbers.com) Warut Roonguthai (warut822(AT)yahoo.com)
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