Regular Expression to match specific string followed by number?

Question

What regular expression can I use to find this?

&v=15151651616

Where &v= is a static string and the number part may va

Answer 1

"^&v=[0-9]+$" if you want at least 1 number or "^&v=[0-9]*$" if no number must match too.

If you want it to match inside another sequence just remove the ^ and $, which means the sequence beginning by (^) and sequence ending with ($)