The primary decomposition of 70 is 2 x 5 x 7. Put simply, 70 can be expressed as a product of its prime 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. These prime factors are the fundamental components 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 main elements. In essence, we are breaking down the number 70 into its constituent fundamental elements. Breaking down the number 70 into its prime divisors 2, 5, and 7 is called finding the prime factors of 70. By doing this we are expressing 70 as a multiplication of its fundamental elements.