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Search: id:A131275
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| A131275 |
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Numbers n such that n divides Sum_{k=1..n} (Prime_k)^15. |
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+0
10
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| 1, 17, 25, 31, 1495, 5555, 8185, 8647, 106841, 187329, 345377, 1811351, 2179119, 2863775, 6368703, 10250821, 59137893
(list; graph; listen)
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OFFSET
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1,2
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MATHEMATICA
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s = 0; Do[s = s + Prime[n]^15; If[ Mod[s, n] == 0, Print[n]], {n, 400000}]
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CROSSREFS
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Cf. A085450 = smallest m > 1 such that m divides Sum_{k=1..m} prime(k)^n.
Cf. A045345, A111441, A122140, A125907, A122142, A125825, A125826, A125828, A131263, A131264, A125827, A131272, A131273, A131274, A131276, A131277, A131278, A131279, A131280, A131281, A131282, A131283, A131284, A131285, A131289, A131290, A131291.
Sequence in context: A105448 A082130 A140609 this_sequence A129910 A034963 A120143
Adjacent sequences: A131272 A131273 A131274 this_sequence A131276 A131277 A131278
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KEYWORD
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more,nonn,less
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AUTHOR
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Alexander Adamchuk (alex(AT)kolmogorov.com), Jun 25 2007
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EXTENSIONS
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a(12)-a(17) from Robert G. Wilson v (rgwv(AT)rgwv.com), Jul 02 2007
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