The primary decomposition for 70 is 2 x 5 x 7. In other words, 70 can be expressed as a product of its primary elements which are 2, 5, and 7. 70 can be written as a result of its divisors 2, 5, and 7 is known as prime decomposition of 70. These prime factors are the building blocks that make up the number 70. By performing the method of finding the prime factors 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 constituent prime elements. Splitting 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 prime factors.