Comment on xkcd #3137: Cursed Number
jaupsinluggies@feddit.uk 4 days agoIf 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.
Comment on xkcd #3137: Cursed Number
jaupsinluggies@feddit.uk 4 days agoIf 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.
sga@piefed.social 3 days ago
it also works for all non prime perfect numbers, 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.