The primary decomposition for 70 is 2 x 5 x 7. In other words, 70 can be expressed as a product of its primary factors that are 2, 5, and 7. 70 can be written as a product of its divisors 2, 5, and 7 is known as the prime factorization of 70. These prime factors are the building blocks that make up the number 70. By performing the process of prime factorization on 70, we can determine that 2, 5, and 7 are its main factors. Basically, we are splitting down the number 70 into its constituent fundamental elements. Breaking down the number 70 into its prime factors 2, 5, and 7 is called the prime factorization of 70. By doing this we are representing 70 as a multiplication of its fundamental elements.