I have a text in vim like :
28473^A1619497837375 28473^A1619497837375 28474^A1619497837375 28474^A1619497837375 28474^A1619497837375 28474^A1619497837375
How do I search the "^A" ?
You can search control characters by their decimal value:
/\%x01
See :help \%x and this table.
:help \%x