How to disallow consecutive five digits and more using regex?

Question

I would like to disallow if the string contains consecutive five digits and more like: 12345, 11111, 123456.

I have got success in disallowing any number in string using

Answer 1

This is a good website for testing your regex:

https://regex101.com/

You could try this:

/^[0-9]{5,}$/

5 numbers or more will pass the regex.