Other than minimal thought, I have not worked on my previous problem of having a number (not necessarily prime) but who's decimal expansion is made up of only primes.
3/4 is an example. It is a Rational Number, 0.75, but it's digits are all prime.
2/3 is not an example, it a a Rational Number, 0.6666... but none of the digits are prime.
We can construct Integers, Rational, Irrationals, Primes, etc, but is there a way to construct what I will call "prime expansions" for now?
More later as some part of my Gray cell collection works on it.
Stuff for me and anybody
