4 ms·

I find it difficult be interested in these, primes are primes; bi-truncatable are base-10 specific. It feels more like numerology in the same way that we assign

• tedunangst 8y ago
  "What's the smallest power of pi that spells your name when encoded in base64?"
  • enriquto 8y ago
    There's probably an infinite set of such powers inside any neighborhood of zero.
    • hervature 8y ago
      I was going to say, that irrationality would mean that any power of pi would contain your name given enough digits.
      • Someone 8y ago
        That logic is incorrect. The base 2 Liouville number (https://en.wikipedia.org/wiki/Liouville_number https://en.wikipedia.org/wiki/Liouville_number) is transcendental, so surely irrational, but mostly contains two repeated characters.
      • Analemma_ 8y ago
        That’s not true. To prove that any digit sequence will eventually appear, you need to show the number is normal (https://en.wikipedia.org/wiki/Normal_number https://en.wikipedia.org/wiki/Normal_number), which is much, much harder to prove than being irrational or even transcendental. It has pretty much only been done for numbers specifically constructed to be normal, and so not including pi.
      • contravariant 8y ago
        Strictly speaking that property hasn't been proven of pi (nor whether this would still hold for powers of pi). As you may have gathered irrationality is a weaker property. Irrationality would be enough to guarantee that you can find a power where your name is right at the start. You do need log(pi)/log(10) (or whatever base you're using) to be irrational for that to work, but I think you can prove that using the fact that pi is transcendental.
• ktm5j 8y ago
  I don't think anyone is trying to ascribe any meaning to this.. like the name of the site implies, it's just a puzzle.
  • tomxor 8y ago
    yes, i wasn't suggesting it should ascribe meaning, only that it's particular artificiality does not allure me.