65535 is the product of the first four Fermat primes:  65535 = (2 + 1)(4 + 1)(16 + 1)(256 + 1).
65535 is the product of the first four Fermat primes:  65535 = (3 + 2)(5 + 2)(17 + 2)(257 + 2). This context highlights the significance of these prime numbers in number theory and computer science.