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A067377 Primes expressible as the sum of (at least two) consecutive primes in at least 1 way. 14

%I #29 Sep 26 2023 09:04:32

%S 5,17,23,31,41,53,59,67,71,83,97,101,109,127,131,139,173,181,197,199,

%T 211,223,233,251,263,269,271,281,311,331,349,353,373,379,401,421,431,

%U 439,443,449,457,463,479,487,491,499,503,523,563,587,593,607,617,631,647,659,661,677,683,691,701,719

%N Primes expressible as the sum of (at least two) consecutive primes in at least 1 way.

%H Hans Havermann, <a href="/A067377/b067377.txt">Table of n, a(n) for n = 1..34589</a>

%H Patrick De Geest, <a href="http://www.worldofnumbers.com/em122.htm">WONplate 122</a>

%H Hans Havermann, <a href="http://chesswanks.com/num/a067377.txt">List of possible number of consecutive primes for n = 1..293768</a>

%H Carlos Rivera, <a href="http://www.primepuzzles.net/puzzles/puzz_046.htm">Puzzle 46. Primes expressible as sum of consecutive primes in K ways</a>, The Prime Puzzles and Problems Connection.

%F Prime(n) such that A307610(n) > 1. - _Ray Chandler_, Sep 21 2023

%e The prime 83, for example, is the sum of the five consecutive primes 11 + 13 + 17 + 19 + 23.

%e The prime 2011, for example, is the sum of the eleven consecutive primes 157 + 163 + 167 + 173 + 179 + 181 + 191 + 193 + 197 + 199 + 211. - _Daniel Forgues_, Nov 03 2011

%t p = {}; Do[a = Table[ Prime[i], {i, n, 150}]; l = Length[a]; k = 2; While[k < l + 1, b = Plus @@@ Partition[a, k]; k++; p = Append[ p, Select[ b, PrimeQ[ # ] &]]], {n, 1, 149}]; Take[ Union[ Flatten[p]], 70]

%t m=5!; lst={}; Do[p=Prime[a]; Do[p+=Prime[b]; If[PrimeQ[p]&&p<=Prime[m]*3+8,AppendTo[lst,p]],{b,a+1,m+2,1}],{a,m}]; Union[lst] (* _Vladimir Joseph Stephan Orlovsky_, Aug 15 2009 *)

%Y Cf. A050936, A067372-A067381, A307610.

%Y Cf. A197227 (primes that are not the sum of consecutive primes).

%K nonn

%O 1,1

%A _Patrick De Geest_, Feb 04 2002

%E Offset changed to 1 by _Hans Havermann_, Oct 07 2018

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Last modified April 24 14:54 EDT 2024. Contains 371960 sequences. (Running on oeis4.)