Run through this checklist:
> Try the query "?q=mNumber:32185". If it returns hits, then the field is getting indexed correctly.
> mNumber should have a corresponding copyfield tag in schema.xml. Otherwise, it won't be included in a default field query like "?q=32185".
> Use solr admin interface or
Luke tool to check whether the field is actually getting indexed.
I don't have v3.3.0 - just v1.4 - but if its "text" data type uses the same tokenizers and filters as 3.3.0, then I can see that a
string like "AL/BL 32185" results in the tokens
al
bl
albl
32185
So as such your query and configuration seem ok for terms like "al" and "32185".