From HomoExcelsior

Also known as the Carmody Number. The prime number which when converted to HEX and then gunziped becomes the C source code for the deCSS DVD decryption routine.

4856507896573978293098418946942861377074420873513579240196520736  
6869851340104723744696879743992611751097377770102744752804905883  
1384037549709987909653955227011712157025974666993240226834596619  
6060348517424977358468518855674570257125474999648219418465571008  
4119086259716947970799152004866709975923596061320725973797993618  
8606316914473588300245336972781813914797955513399949394882899846  
9178361001825978901031601961835034344895687053845208538045842415  
6548248893338047475871128339598968522325446084089711197712769412  
0795862440547161321005006459820176961771809478113622002723448272  
2493232595472346880029277764979061481298404283457201463489685471  
6908235473783566197218622496943162271666393905543024156473292485  
5248991225739466548627140482117138124388217717602984125524464744  
5055834628144883356319027253195904392838737640739168912579240550  
1562088978716337599910788708490815909754801928576845198859630532  
3823490558092032999603234471140776019847163531161713078576084862  
2363702835701049612595681846785965333100770179916146744725492728  
3348691600064758591746278121269007351830924153010630289329566584  
3662000800476778967984382090797619859493646309380586336721469695  
9750279687712057249966669805614533820741203159337703099491527469  
1835659376210222006812679827344576093802030447912277498091795593  
8387121000588766689258448700470772552497060444652127130404321182
610103591186476662963858495087448497373476861420880529443 

Here's a perl algorythm to decode the prime number:

#!/usr/bin/perl
use LWP::Simple;
use Math::BigInt;
$prime = 
$prime =~ s{\D+}{}; 
$prime = Math::BigInt->new($prime);
my $binary = ;
while ($prime > 0) {
        $binary = pack("N", ($prime % 2**32)) . $binary;
        $prime /= 2**32;
}
$binary =~ s{^\0+}{};
open(my $fh, "| gunzip -c 2>/dev/null") or die "cannot gunzip, $!";
print $fh $binary;
close $fh;

See DVD encryption, CSS, deCSS.