53 characters:

sub sieve2 {
    grep{@_[map$a*$_,2..@_/($a=$_)]=0if$_[$_]>1}@_=0..pop
}
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All your t-shirts are belong to me! j/k :-)

   MeowChow                                   
               s aamecha.s a..a\u$&owag.print