Simple ciphers like the Caesar cipher are fun, but they aren't strong enough to properly secure communications. RSA is a common cipher used in the real world. Can you decrypt this ciphertext?

Ciphertext: c $=1792$

Modulus: n $=2173$

Public exponent: e $=3$

Private exponent: d $=1387$

Note: The flag is an integer and is not in the standard flag format. Example: $123$