Typically, a rank consists of 58 pipes, covering the chromatic scale over seven octaves. Therefore, we can estimate the number of ranks by dividing the total number of pipes by the number of pipes per rank.
14,000 pipes / 58 pipes per rank ≈ 241 ranks
So, an organ with 14,000 pipes would have approximately 241 ranks.
However, it's important to note that not all organs have ranks of exactly 58 pipes, and some ranks may include additional pipes for extended range or tonal variation.