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Finding the prime factors of a number
Example. Find the prime factors of 30.
30=10x3. Here , 10 and 3 are factors of 30.
The number 10 can be written as a product of its factors as : 2 x 5. Thus, the prime factors of 30 are :
30 = 2 x 5 x 3. ( 2, 5, 3are prime numbers.)
Finding the prime factors of a number is the same as writing a number as a product of its prime factors.
Tests of divisibility are useful in finding out prime factors.
