The prime factorization of 2 is simply 2 itself. Since 2 is a prime number, it cannot be divided by any other number except for 1 and itself. Prime numbers are defined as numbers greater than 1 that have no positive divisors other than 1 and themselves. Therefore, in prime factorization, 2 is represented as:
2
In summary, the prime factorization of a prime number is the number itself.