Congratulations - you definitely deserve it.
It turns out that the number 73 is quite fascinating in itself: take this for example
"The number 73 is an emirp, meaning that the reverse of 73, that is, 37, is also a prime number. 73 is the 21st prime number while 37 is the 12th prime number"
[Source: Wikipedia] (https://en.m.wikipedia.org/wiki/73_(number))
WOW, #til!