Unfortunately, it is not possible to filter issues based on the number of Sprints using JQL in JIRA.
The best option I can recommend you to get this information would be to exporting the issues to a CSV file and using a spreadsheet software (Excel, Libre-Office, etc) to filter the Sprint column and return all issues with more than a single Sprint (They are separated by comma).
Let me know if this would be an option for you.
Hi All! We’re excited to share the launch of an announcement banner that lets Jira site administrators communicate directly to their users across their Jira Cloud instance. ...
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event
You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events