Sorry if this has been posted elsewhere, but thought I would summarize this and eventually make a wiki with the info as I came across 5 of my priority pass cards today.
Priority Pass issued directly by Chase
Digits: 16
Starting Digit: 735
Expiration: 1 year
Ritz: 7357
CSR: 735
(Chase 73X?)
Digits: 11
Issuer: Priority Pass on behalf of the bank
Starting Digit: 142
Expiration: 3 years (maybe 2)
Prestige: 1426
CapOne 104/105
Amex: 100/102/104/142
Citi: 142
Application E- Cards: These have different numbers than P-cards.
Sources
https://www.doctorofcredit.com/quick...ty-pass-cards/
https://www.reddit.com/r/churning/co...mment/dj8tdkz/