use Math::BigInt;
sub dec2bin{
    my $i = new Math::BigInt shift;
    $i&&dec2bin($i/65536).sprintf"%016b",$i%65536;
}
print dec2bin('123 456 789 123 456 789');

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In reply to Re: dec to bin conversion for large numbers by I0
in thread dec to bin conversion for large numbers by Anonymous Monk

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