⊦ prime(n) ↔ ¬ ¬(1 < n ∧ (∀ m. m | n → m = 1 ∨ m = n))
1 < m ∧ (∀ m0. m0 | m → m0 = 1 ∨ m0 = m), prime(m + 1) ⊦ m = 2
Used terms: m