The main decomposition for 70 is 2 x 5 x 7. Put simply, 70 can be expressed as a product of its prime factors which 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 form the number 70. By performing the process of prime factorization on 70, we can determine that 2, 5, and 7 are its prime factors. In essence, we are splitting down the number 70 into its component fundamental factors. Decomposing the number 70 into its primary factors 2, 5, and 7 is called the prime factorization of 70. By doing this we are representing 70 as a product of its fundamental elements.