PRIME FACTORS

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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.