The primary factors of 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. Expressing 70 as a product of its divisors 2, 5, and 7 is known as prime decomposition of 70. Such divisors are the building blocks that compose the number 70. By performing the method of prime factorization on 70, we can determine that 2, 5, and 7 are its prime elements. Basically, we are splitting down the number 70 into its constituent fundamental factors. Decomposing the number 70 into its primary factors 2, 5, and 7 is called the prime factorization of 70. Performing this we are expressing 70 as a product of its fundamental elements.