| max_prime_divisor(i) * i0 = i, j | i / max_prime_divisor(i), prime(j), 2 ≤ i, 0 ≤ i, 0 < i ⊦ prime(i), j | i |
max_prime_divisor(i) * i0 = i, j | (max_prime_divisor(i) * i0) / max_prime_divisor(i), prime(j), 2 ≤ i, 0 ≤ i, 0 < i ⊦ prime(i), j | max_prime_divisor(i) * i0