“koti-koti sagaropama” is a simile, not a measurement of years. It literally means “as countless as the oceans” or “innumerable as many oceans.” In Jain texts, it is used to express immeasurable greatness or innumerable merits, not a precise number of years.

So, there isn’t an exact year or duration associated with this phrase; it’s meant to convey vast, boundless quantity. If you’d like, I can help locate a specific Jain scripture where this phrase is used and provide the exact context.