A case-insensitive search with Perl regular expression search string \<[a-z]+\d\w*\> finds entire words containing at least 1 digit.

\< ... beginning of a word. \b for any word boundary could be also used.

[a-z]+ ... any letter 1 or more times. You can put additional characters into the square brackets like ÄÖÜäöüß also used in language of text file.

\d ... any digit, i.e. 0-9.

\w* ... any word character 0 or more times. Any word character means all word characters according to Unicode table which includes language dependent word characters, all digits and the underscore.

\> ... end of a word. \b for any word boundary could be also used.

A case-insensitive search with UltraEdit regular expression search string [a-z]+[0-9][a-z0-9_]++ finds also entire words containing at least 1 digit if additionally the find option Match whole word is also checked.

[a-z]+ ... any letter 1 or more times. You can put additional characters into the square brackets used in language of text file.

[0-9] ... any digit.

[a-z0-9_]++ ... any letter, digit or underscore 0 or more times.

The UltraEdit regexp search string [a-z]+[0-9][a-z0-9_]++ in Unix/Perl syntax would be [a-z]+[0-9][a-z0-9_]* which could be also used with find option Match whole word checked instead of the Perl regexp search.