I highly doubt any pope ever, gave over 14 million years for a single prayer/devotion.
Also from the same site in the recitation of the Seven Sorrows Rosary, at each group of prayers it says "Make a wish" REALLY????
https://oracionesydevocionescatolicas.com/seven_sorrows.htm
CI is a traditional site.
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From the link:
Pope Innocent VIII, granted the following indulgences to those who prayed the nine prayers:
Each day: 14,185,149 years of indulgence.
Each Friday: double the amount.
On Holy Friday: 8 Plenary Indulgences.


Who came up with this? And how do you get multiple plenary indulgences at once? Eight at once? Each one resets your slate completely to zero, so how does this happen eight times simultaneously?
In any case, that whole site is absurd.
Indulgences are all listed in the Raccolta. In fact, that's the official directory of all indulgences currently on offer by the Church. The latest edition, the one you see commonly re-printed, is from the 1940s, I believe. If it's not in there, it's not an indulgence.
