Dear Doves,
The World Trade Center resembled a giant number 11 and 11 squared is 121, the concatenation of 121 are the two numbers 12 and 21, the twelfth prime number is 37 and the 21st prime is 73, and I am fairly certain that this links it to Israel's 73rd anniversary year in that the triangular number of 73 is 2701 which is the gematria of Genesis 1:1 and the mirror-image of 73 is 37, also 73 times 37 is again 2701.
Also each of the two towers resembled a giant Hebrew letter vav so a person familiar with Hebrew may have seen a giant number 66, and 66 is the 11th triangular number.
In addition it first opened in 1973, I believe there may be a connection with the number 73 there as well.
Sincerely, Dennis Pittinger