C++ (gcc), 119169 119 118 bytes
#include<bits/stdc++.h>
int main(){std::mt19937 p((uint64_t)new charint);std::string s="1";while(p()%2)s+=s;std::cout<<s;}
This solution is directly derived from the linked paradox in the question. The output string is composed of 1 digits so technically it can be interpreted as a number.
The random number generator is seeded with the address of a heap variable. The address changes each time the program is run.
Another option is to use the address of a newly allocated heap variable:
mt19937 rng((uint64_t) new char);(source)