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A131274 Numbers m such that m divides Sum_{k=1..m} prime(k)^14. 2

%I #24 Mar 28 2022 15:31:58

%S 1,295,455,4361,10817,132680789,334931875,957643538339,82185210732157

%N Numbers m such that m divides Sum_{k=1..m} prime(k)^14.

%C a(8) > 4.1*10^10. - _Robert Price_, Dec 02 2013

%C a(9) > 10^12. - _Paul W. Dyson_, Jan 03 2021

%H OEIS Wiki, <a href="https://oeis.org/wiki/Sums_of_primes_divisibility_sequences">Sums of powers of primes divisibility sequences</a>.

%t s = 0; Do[s = s + Prime[n]^14; If[ Mod[s, n] == 0, Print[n]], {n, 660000000}] (* _Robert G. Wilson v_, Jul 01 2007 *)

%t With[{nn=11000},Select[Thread[{Accumulate[Prime[Range[nn]]^14],Range[ nn]}],Divisible[ #[[1]],#[[2]]]&]][[All,2]] (* The program generates the first 5 terms of the sequence. To generate more, increase the value of nn. *) (* _Harvey P. Dale_, Jun 25 2021 *)

%Y Cf. A085450 (smallest m > 1 such that m divides Sum_{k=1..m} prime(k)^n).

%Y Cf. A007504, A045345, A171399, A128165, A233523, A050247, A050248.

%Y Cf. A024450, A111441, A217599, A128166, A233862, A217600, A217601.

%K more,nonn,less

%O 1,2

%A _Alexander Adamchuk_, Jun 25 2007

%E a(6) from _Robert G. Wilson v_, Jul 01 2007

%E a(7) from _Robert Price_, Dec 02 2013

%E a(8) from _Paul W. Dyson_, Jan 03 2021

%E a(9) from _Bruce Garner_, Mar 28 2022

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Last modified May 13 11:43 EDT 2024. Contains 372504 sequences. (Running on oeis4.)