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 A131558 Primes which are the sum of the first 10^k primes for some k. 0
 2, 24133, 870530414842019, 11138479445180240497, 1948856725874605823462196012533593 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Also numbers n such that A099824(n) is prime. LINKS EXAMPLE The sum of the first 10^1 primes is 129 which is not prime and not in the sequence. The sum of the first 10^9 primes is 11138479445180240497 which is prime and in the sequence. PROG (PARI) sm=0;  ct=0;  p=1;  bb=1; { while ( 1,     p = nextprime(p+1);  sm += p;  ct++;     if ( (ct==bb), if ( isprime(sm), print1(sm, ", ")); bb*=10; ); ); } CROSSREFS Cf. A099824. Sequence in context: A261362 A132942 A237521 * A133857 A232869 A153912 Adjacent sequences:  A131555 A131556 A131557 * A131559 A131560 A131561 KEYWORD nonn,more AUTHOR Cino Hilliard, Aug 27 2007 EXTENSIONS a(5) from David Baugh, Sep 27 2016 STATUS approved

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Last modified January 19 04:17 EST 2020. Contains 331031 sequences. (Running on oeis4.)