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A113489 Composite numbers of the form "Sum of the first 10^k primes". 1
129, 3682913, 496165411, 62260698721, 7472966967499, 99262851056183695, 1234379338586942892505, 135436174616790289414111, 14738971133550183905879827, 1593061976858155930556059673, 171191473337951767580578821529, 18305009217958957209544913346089 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

David Baugh, Table of n, a(n) for n = 1..18

EXAMPLE

The first 10^10 primes add up to 1234379338586942892505, which is composite.

MATHEMATICA

Select[{ (* list A099824 *) }, ! PrimeQ[#] &] (* Robert G. Wilson v, Jan 14 2006 *)

CROSSREFS

Composite terms of A099824.

Sequence in context: A291505 A275097 A238613 * A297942 A298553 A298726

Adjacent sequences:  A113486 A113487 A113488 * A113490 A113491 A113492

KEYWORD

nonn

AUTHOR

Cino Hilliard, Jan 09 2006

EXTENSIONS

Terms a(8) and beyond from David Baugh, Sep 27 2016

STATUS

approved

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Last modified October 14 09:25 EDT 2019. Contains 327995 sequences. (Running on oeis4.)