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Search: id:A123052
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| A123052 |
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Numbers n such that n divides 5^n + 3. |
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+0
3
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| 1, 2, 4, 14, 628, 11524, 16814, 188404, 441484, 2541014, 3984724, 172315684, 208268941
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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Next term if it exists is greater than 10^6. Numbers n up to 10^6 such that n divides 5^n - 3 are {1,2,22,77,242,371,16102,45727,73447,81286,112277,368237}.
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MATHEMATICA
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Select[Range[1000000], IntegerQ[(PowerMod[5, #, # ]+3)/# ]&]
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CROSSREFS
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Cf. A067946 - Numbers n such that n divides 5^n-1. Cf. A015951 - Numbers n such that n | 5^n + 1.
Sequence in context: A061291 A000370 A132531 this_sequence A064773 A019543 A080623
Adjacent sequences: A123049 A123050 A123051 this_sequence A123053 A123054 A123055
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KEYWORD
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hard,more,nonn
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AUTHOR
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Alexander Adamchuk (alex(AT)kolmogorov.com), Nov 04 2006
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EXTENSIONS
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More terms from Ryan Propper (rpropper(AT)stanford.edu), Dec 30 2006
2 more terms from Ryan Propper (rpropper(AT)stanford.edu), Jan 02 2007
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