RSA encryption is modular exponentiation of a message with an exponent $e$ and a modulus $N$ which is normally a product of two primes: $N = p \cdot q$.

Together, the exponent and modulus form an RSA "public key" $(N, e)$. The most common value for $e$ is 0x10001 or $65537$.

"Encrypt" the number $12$ using the exponent $e = 65537$ and the primes $p = 17$ and $q = 23$. What number do you get as the ciphertext?