Maximum distinct values for IEnumerable<int> property

I would like to build a filter for products on the site that a customer has already purchased.

One solution would be to add the customer ids to a product's property. Is it possible to have more than 100,000 distinct values in a property across all indexed ? Is it possible to have more than 10,000 values for an enumerable int for the same content?

Another solution would be to include the list of products that a customer has purchased in the query. Is it possible to have a query with 10,000 distinct ids in one property to filter?