⊦ prime(j) ↔ 2 ≤ j ∧ (∀ i. 1 < i ∧ i < j → ¬ i | j)
2 ≤ i ∧ (∀ i0. 1 < i0 ∧ i0 < i → ¬ i0 | i), 0 < i, 1 < i, j | i, prime(j), j * j ≤ i ⊦
Used terms: i