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Positive integers n such that Sum_{p<=pi(n)} p = n, where pi(x) denotes the number of primes not exceeding x and the summation is over primes p.
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%I #6 Nov 20 2017 11:33:52

%S 5,17,41,77,100

%N Positive integers n such that Sum_{p<=pi(n)} p = n, where pi(x) denotes the number of primes not exceeding x and the summation is over primes p.

%H S. W. Golomb, <a href="http://www.jstor.org/stable/2324281">A Perfect Property of Handful of 2 Numbers, Problem E3385</a>, Amer. Math. Monthly, 98 (No. 9, 1991), 858-859.

%K nonn,fini,full

%O 1,1

%A _Robert G. Wilson v_, Mar 13 2004