{ "question" : { "id": "", "category": "regex", "nerd_level": 5, "text": "This regex is normally used to determine if a number is not prime: /^1?$|^(1+?)\1+$/, but it is broken, how to fix it? The number has the format /1{number}/.", "a1": "/^1?$|^(11+?)\1+$/", "created_at": "2011-06-07", "created_by": "mkorfmann" } }