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A099727 Concatenations of six consecutive primes forming a prime. 3
113127131137139149, 569571577587593599, 727733739743751757, 733739743751757761, 739743751757761769, 102110311033103910491051, 105110611063106910871091, 110911171123112911511153, 118111871193120112131217, 138113991409142314271429 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

K. D. Bajpai, Table of n, a(n) for n = 1..1470

EXAMPLE

The prime 113127131137139149 is a concatenation of the consecutive primes 113, 127, 131, 137, 139 and 149.

MAPLE

with(numtheory): with(StringTools):

KD := proc() local a ;

    a:= parse(cat(ithprime(n), ithprime(n+1), ithprime(n+2), ithprime(n+3), ithprime(n+4), ithprime(n+5)));

    if isprime(a) then RETURN (a);

    fi;

end: seq(KD(), n=1..500); # K. D. Bajpai, Mar 24 2014

CROSSREFS

Cf. A030461, A030469, A030473, A086040, A086041.

Sequence in context: A067818 A262560 A095433 * A198801 A011530 A261152

Adjacent sequences:  A099724 A099725 A099726 * A099728 A099729 A099730

KEYWORD

nonn,base

AUTHOR

Ray G. Opao, Nov 07 2004

STATUS

approved

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Last modified March 26 22:28 EDT 2017. Contains 284138 sequences.