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Search: id:A113850
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| A113850 |
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Numbers whose prime factors are raised to the fifth power. |
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+0
1
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| 32, 243, 3125, 7776, 16807, 100000, 161051, 371293, 537824, 759375, 1419857, 2476099, 4084101, 5153632, 6436343, 11881376, 20511149, 24300000, 28629151, 39135393, 45435424, 52521875, 69343957, 79235168, 90224199, 115856201
(list; graph; listen)
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OFFSET
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4,1
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EXAMPLE
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7776 = 32*243 = 2^5*3^5 so the prime factors, 2 and 3, are raised to the fifth power.
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MATHEMATICA
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Select[ Range@41^5, Union[Last /@ FactorInteger@# ] == {5} &] (* Robert G. Wilson v *)
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PROGRAM
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(PARI) allpwrfact(n, p) = \All prime factors are raised to the power p { local(x, j, ln, y, flag); for(x=4, n, y=Vec(factor(x)); ln = length(y[1]); flag=0; for(j=1, ln, if(y[2][j]==p, flag++); ); if(flag==ln, print1(x", ")); ) }
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CROSSREFS
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Proper subset of A000584.
Adjacent sequences: A113847 A113848 A113849 this_sequence A113851 A113852 A113853
Sequence in context: A055014 A000584 A050752 this_sequence A046454 A050997 A056572
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KEYWORD
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easy,nonn
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AUTHOR
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Cino Hilliard (hillcino368(AT)gmail.com), Jan 25 2006
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(at)rgwv.com), Jan 26 2006
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