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A116611 Positive integers n such that 13^n == 5 (mod n). 10
1, 2, 4, 44, 82, 236, 25433, 177764, 219244, 86150213, 107218402, 1260236441, 12856300141, 447650116364, 657175627369 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

Some larger terms: 99790373907467602, 846248577183963835642742, 273781047810302314432122404459324, 4174626353309446327489382394518975030641698849116, 211*(13^211-5)/12607932861823674049268705845744 (207 digits). [From Max Alekseyev]

EXAMPLE

44 is in this sequence because 13^44 = 10315908977942302627204470186314316211062255002161 = 234452476771415968800101595143507186615051250049*44 + 5 == 5 (mod 44).

CROSSREFS

Cf. A116609.

Sequence in context: A009717 A018317 A059794 * A141142 A007596 A050588

Adjacent sequences:  A116608 A116609 A116610 * A116612 A116613 A116614

KEYWORD

more,nonn

AUTHOR

Zak Seidov (zakseidov(AT)yahoo.com), Feb 19 2006

EXTENSIONS

More terms from Ryan Propper (rpropper(AT)stanford.edu), Apr 01 2006

Terms 1,2,4 are prepended and three more terms are added by Max Alekseyev (maxale(AT)gmail.com), Jun 29 2011

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Last modified February 15 03:59 EST 2012. Contains 205694 sequences.