"Peter's name Petros in Greek means rock pebble or stone" -> one that you can pick up and throw, according to the Interlinear.
However, you ignored the key point made, the Bible does NOT say that Peter means rock or any of the above. That was simply a CC search to support their corruptions, which the gates of hades most definitely prevailed upon, as Peter was Not the Rock that the Church would be built upon. And neither is a Church a conglomeration etc, such as the CC institution, Papal system etc.
The Bible however, does show that certain numbers have meanings - ex - Rev says mans number is 6 and we know man was made on the 6th day etc.
