How to determine the password encryption algorithm?

Question

Passwords

I can not determine the password encryption algorithm. The password itself is displayed as md5, but in fact some other data is added there, or the password is encrypted to md5 in some other way, because my hash does not match the resulting hash.
Examples of passwords and resulting hash:
1) Password: admin Hash: dd63aee6f932472967e8c4c9cc72f84d
2) Password: 1488228 Hash: 6a2a15feba45e1b88d326cb554aa0840

Answer 1

It may well be salted md5 - ie. some constant string is added.
Finding out which one is difficult to say the least.