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A089895 Prime numbers n having the following additional property: There exists an integer k>n such that the sum of all primes <=n equals the sum of all primes between n+1 and k. +0
2
3, 3833, 468872968241 (list; graph; listen)
OFFSET

0,1

LINKS

Resta, Giovanni, Puzzle 18.- Some special sums of consecutive primes , specifically the large solution by Giovanni Resta.

EXAMPLE

2+3+5+...+3833 = 3847+...+5557 and therefore 3833 is in the sequence.

PROGRAM

(PARI) p=2; s=2; q=3; t=3; while(p<512345678900, while(s<=t, p=nextprime(p+1); s=s+p; t=t-p); if (s==t, print1(p, ", "), ); while(t<s, q=nextprime(q+1); t=t+q); if(s==t, print1(p, ", "), ))

CROSSREFS

Sequence in context: A036520 A134909 A003831 this_sequence A116213 A136544 A024048

Adjacent sequences: A089892 A089893 A089894 this_sequence A089896 A089897 A089898

KEYWORD

easy,more,nonn,bref

AUTHOR

Randy L. Ekl (Randy.Ekl(AT)motorola.com), Jan 10 2004

EXTENSIONS

Better definition from Adam M. Kalman (mocha(AT)clarityconnect.com), Jun 16 2005

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.


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