Duplicate entry '2147483647' for key 1

Question

Strange problem I can\'t seem to get my head around. I have a table in a MySQL database with the following structure...

    CREATE TABLE IF NOT EXISTS `tblb         


        

Answer 1

Duplicate entry '57147-2147483647' for key 'app_user' [ INSERT INTO user_lookup (user_id, app_id, app_user_id, special_offers, ip_address) VALUES ('2426569', '57147', '4009116545', 1, 1854489853) ]