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Search: id:A014946
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| A014946 |
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Numbers n such that n divides 6^n-1. |
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6
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| 1, 5, 25, 125, 625, 1555, 3125, 7775, 15625, 38875, 78125, 194375, 390625, 483605, 971875, 1953125, 2418025, 4859375, 9673655, 9765625, 12090125, 24296875, 48368275, 48828125
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OFFSET
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1,2
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COMMENT
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Includes all powers of 5. If a term such as 1555 = 5*311 occurs, so does any number of the form 5^a * 311^b for a>3.
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MATHEMATICA
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Select[ Range[ 5*10^7], PowerMod[6, #, # ] == 1 & ]
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CROSSREFS
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Adjacent sequences: A014943 A014944 A014945 this_sequence A014947 A014948 A014949
Sequence in context: A015950 A126642 A057831 this_sequence A132839 A129066 A102169
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KEYWORD
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nonn
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AUTHOR
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Olivier Gerard (olivier.gerard(AT)gmail.com)
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EXTENSIONS
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Better description from Benoit Cloitre (benoit7848c(AT)orange.fr), Mar 06 2002
Edited and extended by Robert G. Wilson v (rgwv(AT)rgwv.com), Jun 18 2002
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