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A213914 Primes that are sums of three, five, seven and nine consecutive primes. 2

%I #26 Apr 24 2021 10:25:12

%S 28382041,35213777,64411157,92223749,132079147,176955343,253042357,

%T 273128939,365502299,589730549,644178091,712541329,827389151,

%U 993274127,1128722657,1357950109,1504974139,1580552933,1625263531,1665516431,1666495867,1848493579,2218519117

%N Primes that are sums of three, five, seven and nine consecutive primes.

%C The first case of sum of 11 consecutive primes is a(15) = 1128722657 = prime(5903277) +...+ prime(5903287) = 102611081 + 102611083 + 102611087 + 102611129 + 102611137 + 102611141 + 102611149 + 102611189 + 102611203 + 102611227 + 102611231. More such terms? - _Zak Seidov_, Dec 11 2017

%H Zak Seidov, <a href="/A213914/b213914.txt">Table of n, a(n) for n = 1..48</a>

%t Block[{r = Prime@ Range[10^7], s}, Intersection @@ Array[Select[Total /@ Partition[r, 2 # + 1, 1], PrimeQ] &, 4] ] (* _Michael De Vlieger_, Dec 11 2017 *)

%Y Subsequence of A213814. Cf. A211170.

%K nonn

%O 1,1

%A _Zak Seidov_, Mar 05 2013

%E a(10)-a(23) from _Giovanni Resta_, Mar 05 2013

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Last modified April 19 03:29 EDT 2024. Contains 371782 sequences. (Running on oeis4.)