

A030997


Smallest prime which is a concatenation of n consecutive primes.


8



2, 23, 5711, 2357, 711131719, 113127131137139149, 29313741434753, 107109113127131137139149, 211223227229233239241251257, 691701709719727733739743751757, 2329313741434753596167
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OFFSET

1,1


LINKS



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



KEYWORD

nonn,base


AUTHOR



STATUS

approved



