Title text:
Another group of mathematicians is working to put an upper bound on the number, although everyone keeps begging them to stop.
Transcript:
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Source: https://xkcd.com/3137/
this post was submitted on 03 Sep 2025
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If you divide it by itself and add one, you can do that infinitely many times and get a prime every time. Works for all the primes.
it also works for all perfect numbers (by definition non prime), and also triangle numbers (all triangle numbers greater than 3 or non prime), and also for all numbers above 42, and below 69. quite a neat property sir.