⊦ i | j ↔ (∃ i0. i * i0 = j)
prime(i), ∃ i0. j0 * i0 = j, 0 < j, 0 < j0 ⊦ max_exp(i, j) = max_exp(i, j / j0) + max_exp(i, j0)
Used terms: j, j0