For REST Api/AQL search the default maximum value of results is 1000 entries.
For UI search the default maximum value of results is 500 entries.
Queries which Exceed the maximum value of entries will return results until the max value only.
To change this behavior, you will need to modify certain properties on the $ARTIFACTORY_HOME/etc/artifactory.system.properties file:
For AQL/REST search
For UI search
Please note that the "#" sign on this line if presented makes it a comment and thus should be removed.
Additionally, any change on the artifactory.system.properties will require a restart of Artifactory in order for the changes to take effect.