There is no explicit limit on the number of records; the only limit is
the 1 GByte limit on the size of a single .mdb file (all tables,
system tables included, as well as any forms, code, etc.); the
database splitter can help isolate your monster table into a single
database.
1.3 million is quite respectable in size but is well within Access'
capabilities. A one-field table is quite unusual however; how will
this data be used, or searched?