strbreak uses the same "delimiter" that parse() does and neither will work if you are delimiting with a # symbol.
You will need to use the more generic strtok() function.
Something like this:
PHP Code:
strtok(remainingtext, textofinterest, charsmax(textofinterest), remainingtext, charsmax(remainingtext), '#')
number = str_to_num(textofinterest)