Still very significant, in it's own way. Alan Turing was the first to note that ANY computable algorithm can be expressed as a single number, so this is as old as computing itself.
Having said that, if the number is provably identical to the algorithm, in some form, it weakens the entire IP concept for computer programs.
(Various courts have already ruled that programs and/or data are what they are, regardless of compression or encryption. Which shows a considerable lack of understanding by the courts. Nonetheless, once you accept those rulings, then EITHER every number that equates to a copyright or patented work is itself copyright/patented, OR software cannot be copyrighted/patented. I can't see any other meaningful interpretation.)
IMHO, IP should be equated with privacy, except at the level of organizations. It would solve a lot of problems, and also get rid of all these DeCSS/DMCA/UITCA/Dumb Patent articles on here and Slashdot, as well as forcing companies to fix privacy rules, if they're to retain any control over their own stuff.