%!PS

/bubblesort {
    mark exch aload pop counttomark /idx
    exch store
    {
        0 1 idx 1 sub {
            pop 2 copy gt {
                exch
            } if idx 1 roll
        } for
        idx 1 roll /idx idx 1 sub store
        idx 0 eq {
            exit
        } if
    } loop
]
} store

/aeq {
    2 dict begin
    /a exch def
    /b exch def
    a length b length eq {
        /e true def
        0 1 a length 1 sub {
            dup a exch get
            exch b exch get ne {
                /e false def
                exit
            } if
        } for
        e
    } {
        false
    } ifelse
    end
} bind def

/apush { % [a b] c -> [a b c]
    /t exch def
    [ exch aload pop t ]
} bind def

/semiprime {
    /mx exch def
    /mxx mx 2 idiv def
    /primesh mxx dict def
    2 1 mxx {
        primesh exch 1 put
    } for
    /p 2 def
    {
        p dup mul mxx le not {
            exit
        } if
        primesh p known {
            p dup mul p mxx {
              primesh exch undef
            } for
        } if
        p 2 eq {
            /p p 1 sub def
        } if
        /p p 2 add def
    } loop
    /primes 0 array def
    primesh {
        pop
        /primes exch primes exch apush def
    } forall
    /primes primes bubblesort def
    /semiprimesh mx dict def
    0 1 primes length 1 sub {
        /i exch def
        i 1 primes length 1 sub {
            primes exch get primes i get mul /t exch def
            t mx le {
                semiprimesh t 1 put
            } {
                exit
            } ifelse 
        } for
    } for
    /semiprimes 0 array def
    semiprimesh {
        pop
        /semiprimes exch semiprimes exch apush def
    } forall
    /semiprimes semiprimes bubblesort def
    semiprimes
} bind def

100 semiprime [ 4 6 9 10 14 15 21 22 25 26 33 34 35 38 39 46 49 51 55 57 58 62 65 69 74 77 82 85 86 87 91 93 94 95 ]
aeq { (Pass) } { (FAIL) } ifelse =