Claude, at least 4.5, not checked recently, has/had an obsession with the number 47 (or numbers containing 47). Ask it to pick a random time or number, or write prose containing numbers, and the bias was crazy.
Also "something shifted" or "cracked".
Maybe Claude is just a fan of Alias.
Humans tend to be biased towards 47 as well. It’s almost halfway between 1 and 100 and prime so you’ll find people picking it when they have to choose a random number.
Then there’s the whole Pomona College thing https://en.wikipedia.org/wiki/47_(number)