| j0 * i0 = j2 * i2, all_prime_divisors(i0) = all_prime_divisors(i * i0) -1l i, 0 ≤ j2 * i2, 0 < i, prime(i), prime(j0), j0 < j0 * i * i0, j2 < j2 * i2, prime(j2), 2 ≤ j2 * i2, 2 ≤ j0 * i * i0, 0 < j2 * i2, ∀ j1. j0 < j1 ∧ j1 < j0 * i * i0 ∧ prime(j1) → ¬ j1 | j0 * i * i0, ∀ j. j2 < j ∧ j < j2 * i2 ∧ prime(j) → ¬ j | j2 * i2, j2 < j0 ∧ j0 < j2 * i2 → ¬ j0 | j2 * i2, ∀ j0, i1. i→n(j0) < i→n(i * j2 * i2) → i1 | j0 ∧ prime(i1) ∧ 0 < j0 → all_prime_divisors(j0 / i1) = all_prime_divisors(j0) -1l i1 ⊦ j0 = 0, j2 = j0, all_prime_divisors(i2) + j2 ' = all_prime_divisors(i0) + j0 ', prime(j0 * i * i0), prime(j2 * i2) |
j0 * i0 = j2 * i2, all_prime_divisors(i0) = all_prime_divisors(i * i0) -1l i, 0 ≤ j0 * i0, 0 < i, prime(i), prime(j0), j0 < j0 * i * i0, j2 < j0 * i0, prime(j2), 2 ≤ j0 * i0, 2 ≤ j0 * i * i0, 0 < j0 * i0, ∀ j1. j0 < j1 ∧ j1 < j0 * i * i0 ∧ prime(j1) → ¬ j1 | j0 * i * i0, ∀ j. j2 < j ∧ j < j0 * i0 ∧ prime(j) → ¬ j | j0 * i0, j2 < j0 ∧ j0 < j0 * i0 → ¬ j0 | j0 * i0, ∀ j0, i1. i→n(j0) < i→n(i * j2 * i2) → i1 | j0 ∧ prime(i1) ∧ 0 < j0 → all_prime_divisors(j0 / i1) = all_prime_divisors(j0) -1l i1 ⊦ j0 = 0, j2 = j0, all_prime_divisors(i2) + j2 ' = all_prime_divisors(i0) + j0 ', prime(j0 * i * i0), prime(j0 * i0)