Is your paper wallet a private-key (weird big string) or a backup seed (list of words)?
To clarify your private key can look like any of the following:
Base58 uncompressed private key
5Kb8kLf9zgWQnogidDA76MzPL6TsZZY36hWXMssSzNydYXYB9KF
Base58 compressed private key
L53fCHmQhbNp1B4JipfBtfeHZH7cAibzG9oK19XfiFzxHgAkz6JK
Hexadecimal private key
E9873D79C6D87DC0FB6A5778633389F4453213303DA61F20BD67FC233AA33262
Base58 encrypted private key using BIP38
6PRW8vhrsbZJdZDtVCKtfnPoN7ecWKraUagCDg7M9APkNGMxx3fbwMkysT