A113489 Composite numbers of the form "Sum of the first 10^k primes".

129, 3682913, 496165411, 62260698721, 7472966967499, 99262851056183695, 1234379338586942892505, 135436174616790289414111, 14738971133550183905879827, 1593061976858155930556059673, 171191473337951767580578821529, 18305009217958957209544913346089

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: A275097 A337809 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