Search: id:A096366
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%I A096366
%S A096366 6,12,24,28,30,40,42,56,60,80,84,96,108,135,140,168,200,210,224,234,240,
%T A096366 264,270,273,480,496
%N A096366 Known primitive friendly integers.
%C A096366 There may be other primitive friendly integers within the range of those 
               given, but they have yet to be calculated.
%C A096366 All perfect numbers are 2-primitive-friendly (since they are all products 
               of distinct powers of 2 and distinct Mersenne primes.) [From Daniel 
               Forgues (squid(AT)zensearch.com), Jun 24 2009]
%D A096366 Anderson, Claude W. and Hickerson, Dean; Advanced Problem 6020, "Friendly 
               Integers", Amer. Math. Monthly, 1977, V84#1p65-6.
%D A096366 Hickerson, Dean; "Re: Friendly number", post to sci.math newsgroup, 2000, 
               available through groups.google.com.
%H A096366 Walter Nissen, <a href="http://upforthecount.com">Home Page</a> (listed 
               in lieu of email address)
%H A096366 Walter Nissen, <a href="http://listserv.nodak.edu/scripts/wa.exe?A2=ind0407&L=nmbrthry&F=&S=&P=51">
               Primitive Friendly Integers and Exclusive Multiples</a>, 2004 post 
               to NMBRTHRY mailing list
%F A096366 Friends m and n are primitive friendly iff they have no common prime 
               factor of the same multiplicity.
%e A096366 While 6 and 28 are not coprime because they share the common factor 2, 
               the factor 2 appears twice in 28 but only once in 6, so they are 
               in the sequence.
%Y A096366 Cf. A014567, A074902, A095738, A095739.
%Y A096366 Sequence in context: A096387 A094185 A074902 this_sequence A061822 A119840 
               A069171
%Y A096366 Adjacent sequences: A096363 A096364 A096365 this_sequence A096367 A096368 
               A096369
%K A096366 nonn
%O A096366 0,1
%A A096366 Walter Nissen Jul 01 2004

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