The Conclave begins on the 7th of May, or 7/5, like 75 (Conclave=75, Catholic Church=75, Roman Catholic=75). The date can also be written 5/7, like 57 (Rome=57).

Recall that Pope Francis died on Rome’s birthday, April 21 (Rome=57).

The Conclave will begin a span of 17 days from the Pope’s death on April 21 (Pope Francis=59, Sistine Chapel=59 — 59 is the 17th prime number).

https://www.nbcnews.com/world/the-vatican/pope-francis-successor-conclave-catholic-church-rcna204820