Do for every natural number $n$ exist finitely many nonzero(possibly negative) integers $a_p$, finitely many of them nonzero, such that $$\log(n) = \sum_{p \text{ prime}} a_p \log(p-1)?$$$$\log(n) = \sum_{p \text{ prime}} a_p \log(p-1)\,?$$ equivalentlyEquivalently: $$n = \prod_{p \text{ prime}} (p-1)^{a_p}$$$$n = \prod_{p \text{ prime}} (p-1)^{a_p}.$$
Edit This representation would be unique, if we allow only linearly independent primes in the summation: Linear independent prime numbers?